diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 4b96bfa0d..93aa3ec04 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -211,18 +211,18 @@
     </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>
-    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="9.0.0-beta.23613.3">
+    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="9.0.0-beta.23614.6">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>b6349a217d7e2f6b5c1831702f8beef5c171da3f</Sha>
+      <Sha>8b2b5e29c86eaa76e6e3d6d93a1a99dce3bff27d</Sha>
       <SourceBuild RepoName="arcade" ManagedOnly="true" />
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.CMake.Sdk" Version="9.0.0-beta.23613.3">
+    <Dependency Name="Microsoft.DotNet.CMake.Sdk" Version="9.0.0-beta.23614.6">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>b6349a217d7e2f6b5c1831702f8beef5c171da3f</Sha>
+      <Sha>8b2b5e29c86eaa76e6e3d6d93a1a99dce3bff27d</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Build.Tasks.Installers" Version="9.0.0-beta.23613.3">
+    <Dependency Name="Microsoft.DotNet.Build.Tasks.Installers" Version="9.0.0-beta.23614.6">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>b6349a217d7e2f6b5c1831702f8beef5c171da3f</Sha>
+      <Sha>8b2b5e29c86eaa76e6e3d6d93a1a99dce3bff27d</Sha>
     </Dependency>
     <Dependency Name="Microsoft.DotNet.Darc" Version="1.1.0-beta.23578.2">
       <Uri>https://github.com/dotnet/arcade-services</Uri>
@@ -232,9 +232,9 @@
       <Uri>https://github.com/dotnet/arcade-services</Uri>
       <Sha>5263b603d90991a0c200aca8b8892c3d7cfe4751</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.XliffTasks" Version="9.0.0-beta.23613.3">
+    <Dependency Name="Microsoft.DotNet.XliffTasks" Version="9.0.0-beta.23614.6">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>b6349a217d7e2f6b5c1831702f8beef5c171da3f</Sha>
+      <Sha>8b2b5e29c86eaa76e6e3d6d93a1a99dce3bff27d</Sha>
     </Dependency>
     <Dependency Name="Microsoft.Extensions.Logging.Console" Version="8.0.0-alpha.1.22557.12">
       <Uri>https://github.com/dotnet/runtime</Uri>
diff --git a/eng/Versions.props b/eng/Versions.props
index 6b1aa5833..b0844a215 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -40,7 +40,7 @@
   </PropertyGroup>
   <PropertyGroup>
     <!-- Dependency from https://github.com/dotnet/arcade -->
-    <MicrosoftDotNetBuildTasksInstallersPackageVersion>9.0.0-beta.23613.3</MicrosoftDotNetBuildTasksInstallersPackageVersion>
+    <MicrosoftDotNetBuildTasksInstallersPackageVersion>9.0.0-beta.23614.6</MicrosoftDotNetBuildTasksInstallersPackageVersion>
   </PropertyGroup>
   <PropertyGroup>
     <!-- Dependency from https://github.com/dotnet/arcade-services -->
diff --git a/eng/common/sdl/trim-assets-version.ps1 b/eng/common/sdl/trim-assets-version.ps1
index a2e004877..1f3c531b2 100644
--- a/eng/common/sdl/trim-assets-version.ps1
+++ b/eng/common/sdl/trim-assets-version.ps1
@@ -61,6 +61,8 @@ try {
     ExitWithExitCode 1
   }
 
+  # Remove the ROLL FORWARD env var with a future Arcade.Sdk update in Arcade.
+  $env:DOTNET_ROLL_FORWARD = "Major"
   Exec-BlockVerbosely {
     & "$dotnet" $CliToolName trim-assets-version `
       --assets-path $InputPath `
@@ -72,4 +74,4 @@ catch {
   Write-Host $_
   Write-PipelineTelemetryError -Force -Category 'Sdl' -Message $_
   ExitWithExitCode 1
-}
\ No newline at end of file
+}
diff --git a/eng/common/templates/steps/source-build.yml b/eng/common/templates/steps/source-build.yml
index 41bbb9157..1d7979736 100644
--- a/eng/common/templates/steps/source-build.yml
+++ b/eng/common/templates/steps/source-build.yml
@@ -105,7 +105,7 @@ steps:
     Contents: |
       **/*.log
       **/*.binlog
-      artifacts/source-build/self/prebuilt-report/**
+      artifacts/sb/prebuilt-report/**
     TargetFolder: '$(Build.StagingDirectory)/BuildLogs'
     CleanTargetFolder: true
   continueOnError: true
@@ -126,4 +126,4 @@ steps:
 - task: ComponentGovernanceComponentDetection@0
   displayName: Component Detection (Exclude upstream cache)
   inputs:
-    ignoreDirectories: '$(Build.SourcesDirectory)/artifacts/source-build/self/src/artifacts/obj/source-built-upstream-cache'
+    ignoreDirectories: '$(Build.SourcesDirectory)/artifacts/sb/src/artifacts/obj/source-built-upstream-cache'
diff --git a/eng/common/tools.ps1 b/eng/common/tools.ps1
index 540393a66..9048d6032 100644
--- a/eng/common/tools.ps1
+++ b/eng/common/tools.ps1
@@ -596,7 +596,7 @@ function InitializeBuildTool() {
       ExitWithExitCode 1
     }
     $dotnetPath = Join-Path $dotnetRoot (GetExecutableFileName 'dotnet')
-    $buildTool = @{ Path = $dotnetPath; Command = 'msbuild'; Tool = 'dotnet'; Framework = 'net8.0' }
+    $buildTool = @{ Path = $dotnetPath; Command = 'msbuild'; Tool = 'dotnet'; Framework = 'net9.0' }
   } elseif ($msbuildEngine -eq "vs") {
     try {
       $msbuildPath = InitializeVisualStudioMSBuild -install:$restore
@@ -671,8 +671,14 @@ function Read-ArcadeSdkVersion() {
 }
 
 function InitializeToolset() {
-  if (Test-Path variable:global:_ToolsetBuildProj) {
-    return $global:_ToolsetBuildProj
+  # For Unified Build/Source-build support, check whether the environment variable is
+  # set. If it is, then use this as the toolset build project.
+  if ($env:_InitializeToolset -ne $null) {
+    return $global:_InitializeToolset = $env:_InitializeToolset
+  }
+
+  if (Test-Path variable:global:_InitializeToolset) {
+    return $global:_InitializeToolset
   }
 
   $nugetCache = GetNuGetPackageCachePath
@@ -683,7 +689,7 @@ function InitializeToolset() {
   if (Test-Path $toolsetLocationFile) {
     $path = Get-Content $toolsetLocationFile -TotalCount 1
     if (Test-Path $path) {
-      return $global:_ToolsetBuildProj = $path
+      return $global:_InitializeToolset = $path
     }
   }
 
@@ -706,7 +712,7 @@ function InitializeToolset() {
     throw "Invalid toolset path: $path"
   }
 
-  return $global:_ToolsetBuildProj = $path
+  return $global:_InitializeToolset = $path
 }
 
 function ExitWithExitCode([int] $exitCode) {
@@ -758,12 +764,10 @@ function MSBuild() {
       # new scripts need to work with old packages, so we need to look for the old names/versions
       (Join-Path $basePath (Join-Path $buildTool.Framework 'Microsoft.DotNet.ArcadeLogging.dll')),
       (Join-Path $basePath (Join-Path $buildTool.Framework 'Microsoft.DotNet.Arcade.Sdk.dll')),
-      (Join-Path $basePath (Join-Path netcoreapp2.1 'Microsoft.DotNet.ArcadeLogging.dll')),
-      (Join-Path $basePath (Join-Path netcoreapp2.1 'Microsoft.DotNet.Arcade.Sdk.dll'))
-      (Join-Path $basePath (Join-Path netcoreapp3.1 'Microsoft.DotNet.ArcadeLogging.dll')),
-      (Join-Path $basePath (Join-Path netcoreapp3.1 'Microsoft.DotNet.Arcade.Sdk.dll'))
       (Join-Path $basePath (Join-Path net7.0 'Microsoft.DotNet.ArcadeLogging.dll')),
-      (Join-Path $basePath (Join-Path net7.0 'Microsoft.DotNet.Arcade.Sdk.dll'))
+      (Join-Path $basePath (Join-Path net7.0 'Microsoft.DotNet.Arcade.Sdk.dll')),
+      (Join-Path $basePath (Join-Path net8.0 'Microsoft.DotNet.ArcadeLogging.dll')),
+      (Join-Path $basePath (Join-Path net8.0 'Microsoft.DotNet.Arcade.Sdk.dll'))
     )
     $selectedPath = $null
     foreach ($path in $possiblePaths) {
diff --git a/eng/common/tools.sh b/eng/common/tools.sh
index 9e979ac16..ece4b7307 100755
--- a/eng/common/tools.sh
+++ b/eng/common/tools.sh
@@ -338,7 +338,7 @@ function InitializeBuildTool {
   _InitializeBuildToolCommand="msbuild"
   # use override if it exists - commonly set by source-build
   if [[ "${_OverrideArcadeInitializeBuildToolFramework:-x}" == "x" ]]; then
-    _InitializeBuildToolFramework="net8.0"
+    _InitializeBuildToolFramework="net9.0"
   else
     _InitializeBuildToolFramework="${_OverrideArcadeInitializeBuildToolFramework}"
   fi
@@ -453,12 +453,10 @@ function MSBuild {
     local possiblePaths=()
     possiblePaths+=( "$toolset_dir/$_InitializeBuildToolFramework/Microsoft.DotNet.ArcadeLogging.dll" )
     possiblePaths+=( "$toolset_dir/$_InitializeBuildToolFramework/Microsoft.DotNet.Arcade.Sdk.dll" )
-    possiblePaths+=( "$toolset_dir/netcoreapp2.1/Microsoft.DotNet.ArcadeLogging.dll" )
-    possiblePaths+=( "$toolset_dir/netcoreapp2.1/Microsoft.DotNet.Arcade.Sdk.dll" )
-    possiblePaths+=( "$toolset_dir/netcoreapp3.1/Microsoft.DotNet.ArcadeLogging.dll" )
-    possiblePaths+=( "$toolset_dir/netcoreapp3.1/Microsoft.DotNet.Arcade.Sdk.dll" )
     possiblePaths+=( "$toolset_dir/net7.0/Microsoft.DotNet.ArcadeLogging.dll" )
     possiblePaths+=( "$toolset_dir/net7.0/Microsoft.DotNet.Arcade.Sdk.dll" )
+    possiblePaths+=( "$toolset_dir/net8.0/Microsoft.DotNet.ArcadeLogging.dll" )
+    possiblePaths+=( "$toolset_dir/net8.0/Microsoft.DotNet.Arcade.Sdk.dll" )
     for path in "${possiblePaths[@]}"; do
       if [[ -f $path ]]; then
         selectedPath=$path
diff --git a/global.json b/global.json
index 293535aae..88ad3b49e 100644
--- a/global.json
+++ b/global.json
@@ -1,6 +1,6 @@
 {
   "tools": {
-    "dotnet": "9.0.100-alpha.1.23524.3",
+    "dotnet": "9.0.100-alpha.1.23613.1",
     "runtimes": {
       "dotnet": [
         "$(VSRedistCommonNetCoreSharedFrameworkx6490PackageVersion)"
@@ -11,7 +11,7 @@
     "cmake": "3.21.0"
   },
   "msbuild-sdks": {
-    "Microsoft.DotNet.Arcade.Sdk": "9.0.0-beta.23613.3",
-    "Microsoft.DotNet.CMake.Sdk": "9.0.0-beta.23613.3"
+    "Microsoft.DotNet.Arcade.Sdk": "9.0.0-beta.23614.6",
+    "Microsoft.DotNet.CMake.Sdk": "9.0.0-beta.23614.6"
   }
 }
diff --git a/src/SourceBuild/content/repo-projects/Directory.Build.targets b/src/SourceBuild/content/repo-projects/Directory.Build.targets
index 07aefc4d8..7e4d04284 100644
--- a/src/SourceBuild/content/repo-projects/Directory.Build.targets
+++ b/src/SourceBuild/content/repo-projects/Directory.Build.targets
@@ -320,7 +320,7 @@
   <Target Name="CopyInnerBuildRestoredPackages"
           AfterTargets="Package">
     <ItemGroup>
-      <_InnerPackageCacheFiles Include="$(ProjectDirectory)artifacts/source-build/self/package-cache/**/*" />
+      <_InnerPackageCacheFiles Include="$(ProjectDirectory)artifacts/sb/package-cache/**/*" />
     </ItemGroup>
 
     <Copy SourceFiles="@(_InnerPackageCacheFiles)"
diff --git a/src/SourceBuild/patches/arcade/0001-Use-net9.0-for-task-assembly-paths.patch b/src/SourceBuild/patches/arcade/0001-Use-net9.0-for-task-assembly-paths.patch
deleted file mode 100644
index 71bac9212..000000000
--- a/src/SourceBuild/patches/arcade/0001-Use-net9.0-for-task-assembly-paths.patch
+++ /dev/null
@@ -1,232 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Matt Thalman <mthalman@microsoft.com>
-Date: Thu, 16 Nov 2023 14:42:59 -0600
-Subject: [PATCH] Use net9.0 for task assembly paths
-
-Backport: https://github.com/dotnet/source-build/issues/3743
----
- .../tools/BuildReleasePackages.targets                          | 2 +-
- src/Microsoft.DotNet.Arcade.Sdk/tools/BuildTasks.props          | 2 +-
- .../build/Microsoft.DotNet.Build.Tasks.Installers.props         | 2 +-
- .../src/build/Packaging.common.targets                          | 2 +-
- .../build/Microsoft.DotNet.Build.Tasks.TargetFramework.props    | 2 +-
- .../src/build/Microsoft.DotNet.Build.Tasks.Workloads.props      | 2 +-
- .../build/Microsoft.DotNet.Deployment.Tasks.Links.props         | 2 +-
- .../build/Microsoft.DotNet.GenFacades.targets                   | 2 +-
- .../Sdk/tools/Microsoft.DotNet.Helix.Sdk.props                  | 2 +-
- .../build/Microsoft.DotNet.PackageTesting.props                 | 2 +-
- src/Microsoft.DotNet.SharedFramework.Sdk/sdk/Sdk.props          | 2 +-
- .../build/Microsoft.DotNet.SignTool.props                       | 2 +-
- .../tasks/build/Microsoft.DotNet.SourceBuild.Tasks.props        | 2 +-
- .../build/Microsoft.DotNet.SwaggerGenerator.MSBuild.props       | 2 +-
- .../src/build/Microsoft.DotNet.XUnitConsoleRunner.props         | 2 +-
- .../build/Microsoft.DotNet.XliffTasks.targets                   | 2 +-
- 16 files changed, 16 insertions(+), 16 deletions(-)
-
-diff --git a/src/Microsoft.DotNet.Arcade.Sdk/tools/BuildReleasePackages.targets b/src/Microsoft.DotNet.Arcade.Sdk/tools/BuildReleasePackages.targets
-index af86865d..751a79c4 100644
---- a/src/Microsoft.DotNet.Arcade.Sdk/tools/BuildReleasePackages.targets
-+++ b/src/Microsoft.DotNet.Arcade.Sdk/tools/BuildReleasePackages.targets
-@@ -2,7 +2,7 @@
- <Project>
-   <PropertyGroup>
-     <_NuGetRepackAssembly Condition="'$(MSBuildRuntimeType)' != 'Core'">$(NuGetPackageRoot)microsoft.dotnet.nugetrepack.tasks\$(MicrosoftDotnetNuGetRepackTasksVersion)\tools\net472\Microsoft.DotNet.NuGetRepack.Tasks.dll</_NuGetRepackAssembly>
--    <_NuGetRepackAssembly Condition="'$(MSBuildRuntimeType)' == 'Core'">$(NuGetPackageRoot)microsoft.dotnet.nugetrepack.tasks\$(MicrosoftDotnetNuGetRepackTasksVersion)\tools\net8.0\Microsoft.DotNet.NuGetRepack.Tasks.dll</_NuGetRepackAssembly>
-+    <_NuGetRepackAssembly Condition="'$(MSBuildRuntimeType)' == 'Core'">$(NuGetPackageRoot)microsoft.dotnet.nugetrepack.tasks\$(MicrosoftDotnetNuGetRepackTasksVersion)\tools\net9.0\Microsoft.DotNet.NuGetRepack.Tasks.dll</_NuGetRepackAssembly>
-   </PropertyGroup>
- 
-   <UsingTask TaskName="Microsoft.DotNet.Tools.UpdatePackageVersionTask" AssemblyFile="$(_NuGetRepackAssembly)" />
-diff --git a/src/Microsoft.DotNet.Arcade.Sdk/tools/BuildTasks.props b/src/Microsoft.DotNet.Arcade.Sdk/tools/BuildTasks.props
-index 39214fef..74755a09 100644
---- a/src/Microsoft.DotNet.Arcade.Sdk/tools/BuildTasks.props
-+++ b/src/Microsoft.DotNet.Arcade.Sdk/tools/BuildTasks.props
-@@ -2,6 +2,6 @@
- <Project>
-   <PropertyGroup>
-     <ArcadeSdkBuildTasksAssembly Condition="'$(MSBuildRuntimeType)' != 'Core'">$(MSBuildThisFileDirectory)net472\Microsoft.DotNet.Arcade.Sdk.dll</ArcadeSdkBuildTasksAssembly>
--    <ArcadeSdkBuildTasksAssembly Condition="'$(MSBuildRuntimeType)' == 'Core'">$(MSBuildThisFileDirectory)net8.0\Microsoft.DotNet.Arcade.Sdk.dll</ArcadeSdkBuildTasksAssembly>
-+    <ArcadeSdkBuildTasksAssembly Condition="'$(MSBuildRuntimeType)' == 'Core'">$(MSBuildThisFileDirectory)net9.0\Microsoft.DotNet.Arcade.Sdk.dll</ArcadeSdkBuildTasksAssembly>
-   </PropertyGroup>
- </Project>
-diff --git a/src/Microsoft.DotNet.Build.Tasks.Installers/build/Microsoft.DotNet.Build.Tasks.Installers.props b/src/Microsoft.DotNet.Build.Tasks.Installers/build/Microsoft.DotNet.Build.Tasks.Installers.props
-index a7910488..6a8895b5 100644
---- a/src/Microsoft.DotNet.Build.Tasks.Installers/build/Microsoft.DotNet.Build.Tasks.Installers.props
-+++ b/src/Microsoft.DotNet.Build.Tasks.Installers/build/Microsoft.DotNet.Build.Tasks.Installers.props
-@@ -2,7 +2,7 @@
- <Project>
- 
-   <PropertyGroup>
--    <MicrosoftDotNetBuildTasksInstallersTaskAssembly Condition="'$(MSBuildRuntimeType)' == 'Core'">$(MSBuildThisFileDirectory)..\tools\net8.0\Microsoft.DotNet.Build.Tasks.Installers.dll</MicrosoftDotNetBuildTasksInstallersTaskAssembly>
-+    <MicrosoftDotNetBuildTasksInstallersTaskAssembly Condition="'$(MSBuildRuntimeType)' == 'Core'">$(MSBuildThisFileDirectory)..\tools\net9.0\Microsoft.DotNet.Build.Tasks.Installers.dll</MicrosoftDotNetBuildTasksInstallersTaskAssembly>
-     <MicrosoftDotNetBuildTasksInstallersTaskAssembly Condition="'$(MSBuildRuntimeType)' != 'Core'">$(MSBuildThisFileDirectory)..\tools\net472\Microsoft.DotNet.Build.Tasks.Installers.dll</MicrosoftDotNetBuildTasksInstallersTaskAssembly>
-     <MicrosoftDotNetBuildTasksInstallersMSBuildDir Condition="'$(MicrosoftDotNetBuildTasksInstallersMSBuildDir)' == ''">$(MSBuildThisFileDirectory)</MicrosoftDotNetBuildTasksInstallersMSBuildDir>
-   </PropertyGroup>
-diff --git a/src/Microsoft.DotNet.Build.Tasks.Packaging/src/build/Packaging.common.targets b/src/Microsoft.DotNet.Build.Tasks.Packaging/src/build/Packaging.common.targets
-index 99b1d490..4ae4de45 100644
---- a/src/Microsoft.DotNet.Build.Tasks.Packaging/src/build/Packaging.common.targets
-+++ b/src/Microsoft.DotNet.Build.Tasks.Packaging/src/build/Packaging.common.targets
-@@ -4,7 +4,7 @@
-   </PropertyGroup>
- 
-   <PropertyGroup>
--    <PackagingTaskDir Condition="'$(PackagingTaskDir)' == '' AND '$(MSBuildRuntimeType)' == 'core'">$(MSBuildThisFileDirectory)../tools/net8.0/</PackagingTaskDir>
-+    <PackagingTaskDir Condition="'$(PackagingTaskDir)' == '' AND '$(MSBuildRuntimeType)' == 'core'">$(MSBuildThisFileDirectory)../tools/net9.0/</PackagingTaskDir>
-     <PackagingTaskDir Condition="'$(PackagingTaskDir)' == '' AND '$(MSBuildRuntimeType)' != 'core'">$(MSBuildThisFileDirectory)../tools/net472/</PackagingTaskDir>
-     <RuntimeIdGraphDefinitionFile Condition="'$(RuntimeIdGraphDefinitionFile)' == ''">$(MSBuildThisFileDirectory)runtime.json</RuntimeIdGraphDefinitionFile>
- 
-diff --git a/src/Microsoft.DotNet.Build.Tasks.TargetFramework/src/build/Microsoft.DotNet.Build.Tasks.TargetFramework.props b/src/Microsoft.DotNet.Build.Tasks.TargetFramework/src/build/Microsoft.DotNet.Build.Tasks.TargetFramework.props
-index 9712b0ad..801ec5cd 100644
---- a/src/Microsoft.DotNet.Build.Tasks.TargetFramework/src/build/Microsoft.DotNet.Build.Tasks.TargetFramework.props
-+++ b/src/Microsoft.DotNet.Build.Tasks.TargetFramework/src/build/Microsoft.DotNet.Build.Tasks.TargetFramework.props
-@@ -1,7 +1,7 @@
- <!-- Licensed to the .NET Foundation under one or more agreements. The .NET Foundation licenses this file to you under the MIT license. -->
- <Project>
-   <PropertyGroup>
--    <DotNetBuildTasksTargetFrameworkAssembly Condition="'$(MSBuildRuntimeType)' == 'core'">..\tools\net8.0\Microsoft.DotNet.Build.Tasks.TargetFramework.dll</DotNetBuildTasksTargetFrameworkAssembly>
-+    <DotNetBuildTasksTargetFrameworkAssembly Condition="'$(MSBuildRuntimeType)' == 'core'">..\tools\net9.0\Microsoft.DotNet.Build.Tasks.TargetFramework.dll</DotNetBuildTasksTargetFrameworkAssembly>
-     <DotNetBuildTasksTargetFrameworkAssembly Condition="'$(MSBuildRuntimeType)' != 'core'">..\tools\net472\Microsoft.DotNet.Build.Tasks.TargetFramework.dll</DotNetBuildTasksTargetFrameworkAssembly>
-   </PropertyGroup>
- </Project>
-diff --git a/src/Microsoft.DotNet.Build.Tasks.Workloads/src/build/Microsoft.DotNet.Build.Tasks.Workloads.props b/src/Microsoft.DotNet.Build.Tasks.Workloads/src/build/Microsoft.DotNet.Build.Tasks.Workloads.props
-index b7e95130..900fdb47 100644
---- a/src/Microsoft.DotNet.Build.Tasks.Workloads/src/build/Microsoft.DotNet.Build.Tasks.Workloads.props
-+++ b/src/Microsoft.DotNet.Build.Tasks.Workloads/src/build/Microsoft.DotNet.Build.Tasks.Workloads.props
-@@ -2,7 +2,7 @@
- <Project>
- 
-   <PropertyGroup>
--    <MicrosoftDotNetBuildTasksWorkloadsAssembly Condition="'$(MSBuildRuntimeType)' == 'Core'">$(MSBuildThisFileDirectory)..\tools\net8.0\Microsoft.DotNet.Build.Tasks.Workloads.dll</MicrosoftDotNetBuildTasksWorkloadsAssembly>
-+    <MicrosoftDotNetBuildTasksWorkloadsAssembly Condition="'$(MSBuildRuntimeType)' == 'Core'">$(MSBuildThisFileDirectory)..\tools\net9.0\Microsoft.DotNet.Build.Tasks.Workloads.dll</MicrosoftDotNetBuildTasksWorkloadsAssembly>
-     <MicrosoftDotNetBuildTasksWorkloadsAssembly Condition="'$(MSBuildRuntimeType)' != 'Core'">$(MSBuildThisFileDirectory)..\tools\net472\Microsoft.DotNet.Build.Tasks.Workloads.dll</MicrosoftDotNetBuildTasksWorkloadsAssembly>
-   </PropertyGroup>
- 
-diff --git a/src/Microsoft.DotNet.Deployment.Tasks.Links/build/Microsoft.DotNet.Deployment.Tasks.Links.props b/src/Microsoft.DotNet.Deployment.Tasks.Links/build/Microsoft.DotNet.Deployment.Tasks.Links.props
-index 3ff65b8c..dcc23986 100644
---- a/src/Microsoft.DotNet.Deployment.Tasks.Links/build/Microsoft.DotNet.Deployment.Tasks.Links.props
-+++ b/src/Microsoft.DotNet.Deployment.Tasks.Links/build/Microsoft.DotNet.Deployment.Tasks.Links.props
-@@ -2,7 +2,7 @@
- <Project>
- 
-   <PropertyGroup>
--    <MicrosoftDotNetDeploymentTasksLinksTaskAssembly Condition=" '$(MSBuildRuntimeType)' == 'Core' ">$(MSBuildThisFileDirectory)net8.0\Microsoft.DotNet.Deployment.Tasks.Links.dll</MicrosoftDotNetDeploymentTasksLinksTaskAssembly>
-+    <MicrosoftDotNetDeploymentTasksLinksTaskAssembly Condition=" '$(MSBuildRuntimeType)' == 'Core' ">$(MSBuildThisFileDirectory)net9.0\Microsoft.DotNet.Deployment.Tasks.Links.dll</MicrosoftDotNetDeploymentTasksLinksTaskAssembly>
-     <MicrosoftDotNetDeploymentTasksLinksTaskAssembly Condition=" '$(MSBuildRuntimeType)' != 'Core' ">$(MSBuildThisFileDirectory)net472\Microsoft.DotNet.Deployment.Tasks.Links.dll</MicrosoftDotNetDeploymentTasksLinksTaskAssembly>
-   </PropertyGroup>
- 
-diff --git a/src/Microsoft.DotNet.GenFacades/build/Microsoft.DotNet.GenFacades.targets b/src/Microsoft.DotNet.GenFacades/build/Microsoft.DotNet.GenFacades.targets
-index 65045a3a..98f22ef3 100644
---- a/src/Microsoft.DotNet.GenFacades/build/Microsoft.DotNet.GenFacades.targets
-+++ b/src/Microsoft.DotNet.GenFacades/build/Microsoft.DotNet.GenFacades.targets
-@@ -2,7 +2,7 @@
- <Project>
- 
-   <PropertyGroup>
--    <GenFacadesTargetAssemblyPath Condition="'$(MSBuildRuntimeType)' == 'Core'">$(MSBuildThisFileDirectory)..\tools\net8.0\Microsoft.DotNet.GenFacades.dll</GenFacadesTargetAssemblyPath>
-+    <GenFacadesTargetAssemblyPath Condition="'$(MSBuildRuntimeType)' == 'Core'">$(MSBuildThisFileDirectory)..\tools\net9.0\Microsoft.DotNet.GenFacades.dll</GenFacadesTargetAssemblyPath>
-     <GenFacadesTargetAssemblyPath Condition="'$(MSBuildRuntimeType)' != 'Core'">$(MSBuildThisFileDirectory)..\tools\net472\Microsoft.DotNet.GenFacades.dll</GenFacadesTargetAssemblyPath>
-   </PropertyGroup>
- 
-diff --git a/src/Microsoft.DotNet.Helix/Sdk/tools/Microsoft.DotNet.Helix.Sdk.props b/src/Microsoft.DotNet.Helix/Sdk/tools/Microsoft.DotNet.Helix.Sdk.props
-index 1c51c182..ec91afae 100644
---- a/src/Microsoft.DotNet.Helix/Sdk/tools/Microsoft.DotNet.Helix.Sdk.props
-+++ b/src/Microsoft.DotNet.Helix/Sdk/tools/Microsoft.DotNet.Helix.Sdk.props
-@@ -4,7 +4,7 @@
-   <Import Project="$(MSBuildToolsPath)\Microsoft.NETCoreSdk.BundledVersions.props" Condition="Exists('$(MSBuildToolsPath)\Microsoft.NETCoreSdk.BundledVersions.props')" />
- 
-   <PropertyGroup Condition="'$(MicrosoftDotNetHelixSdkTasksAssembly)' == ''">
--    <MicrosoftDotNetHelixSdkTasksAssembly Condition="'$(MSBuildRuntimeType)' == 'Core'">$(MSBuildThisFileDirectory)net8.0/Microsoft.DotNet.Helix.Sdk.dll</MicrosoftDotNetHelixSdkTasksAssembly>
-+    <MicrosoftDotNetHelixSdkTasksAssembly Condition="'$(MSBuildRuntimeType)' == 'Core'">$(MSBuildThisFileDirectory)net9.0/Microsoft.DotNet.Helix.Sdk.dll</MicrosoftDotNetHelixSdkTasksAssembly>
-     <MicrosoftDotNetHelixSdkTasksAssembly Condition="'$(MSBuildRuntimeType)' != 'Core'">$(MSBuildThisFileDirectory)net472/Microsoft.DotNet.Helix.Sdk.dll</MicrosoftDotNetHelixSdkTasksAssembly>
-   </PropertyGroup>
- 
-diff --git a/src/Microsoft.DotNet.PackageTesting/build/Microsoft.DotNet.PackageTesting.props b/src/Microsoft.DotNet.PackageTesting/build/Microsoft.DotNet.PackageTesting.props
-index 82850655..394ed5cc 100644
---- a/src/Microsoft.DotNet.PackageTesting/build/Microsoft.DotNet.PackageTesting.props
-+++ b/src/Microsoft.DotNet.PackageTesting/build/Microsoft.DotNet.PackageTesting.props
-@@ -3,7 +3,7 @@
- 
-   <PropertyGroup>
-     <DotNetPackageTestingAssembly Condition="'$(MSBuildRuntimeType)' != 'Core'">$(MSBuildThisFileDirectory)..\tools\net472\Microsoft.DotNet.PackageTesting.dll</DotNetPackageTestingAssembly>
--    <DotNetPackageTestingAssembly Condition="'$(MSBuildRuntimeType)' == 'Core'">$(MSBuildThisFileDirectory)..\tools\net8.0\Microsoft.DotNet.PackageTesting.dll</DotNetPackageTestingAssembly>
-+    <DotNetPackageTestingAssembly Condition="'$(MSBuildRuntimeType)' == 'Core'">$(MSBuildThisFileDirectory)..\tools\net9.0\Microsoft.DotNet.PackageTesting.dll</DotNetPackageTestingAssembly>
-   </PropertyGroup>
- 
-   <UsingTask TaskName="GetCompatiblePackageTargetFrameworks" AssemblyFile="$(DotNetPackageTestingAssembly)" />
-diff --git a/src/Microsoft.DotNet.SharedFramework.Sdk/sdk/Sdk.props b/src/Microsoft.DotNet.SharedFramework.Sdk/sdk/Sdk.props
-index 44951b96..77176b15 100644
---- a/src/Microsoft.DotNet.SharedFramework.Sdk/sdk/Sdk.props
-+++ b/src/Microsoft.DotNet.SharedFramework.Sdk/sdk/Sdk.props
-@@ -9,7 +9,7 @@
-   -->
- 
-   <PropertyGroup Condition="'$(DotNetSharedFrameworkTaskDir)' == ''">
--    <DotNetSharedFrameworkTaskDir Condition="'$(MSBuildRuntimeType)' == 'core'">$(MSBuildThisFileDirectory)../tools/net8.0/</DotNetSharedFrameworkTaskDir>
-+    <DotNetSharedFrameworkTaskDir Condition="'$(MSBuildRuntimeType)' == 'core'">$(MSBuildThisFileDirectory)../tools/net9.0/</DotNetSharedFrameworkTaskDir>
-     <DotNetSharedFrameworkTaskDir Condition="'$(MSBuildRuntimeType)' != 'core'">$(MSBuildThisFileDirectory)../tools/net472/</DotNetSharedFrameworkTaskDir>
-   </PropertyGroup>
- 
-diff --git a/src/Microsoft.DotNet.SignTool/build/Microsoft.DotNet.SignTool.props b/src/Microsoft.DotNet.SignTool/build/Microsoft.DotNet.SignTool.props
-index 369cb60a..3522d8c5 100644
---- a/src/Microsoft.DotNet.SignTool/build/Microsoft.DotNet.SignTool.props
-+++ b/src/Microsoft.DotNet.SignTool/build/Microsoft.DotNet.SignTool.props
-@@ -2,7 +2,7 @@
- <Project>
- 
-   <PropertyGroup>
--    <MicrosoftDotNetSignToolTaskAssembly Condition="'$(MSBuildRuntimeType)' == 'Core'">$(MSBuildThisFileDirectory)..\lib\net8.0\Microsoft.DotNet.SignTool.dll</MicrosoftDotNetSignToolTaskAssembly>
-+    <MicrosoftDotNetSignToolTaskAssembly Condition="'$(MSBuildRuntimeType)' == 'Core'">$(MSBuildThisFileDirectory)..\lib\net9.0\Microsoft.DotNet.SignTool.dll</MicrosoftDotNetSignToolTaskAssembly>
-     <MicrosoftDotNetSignToolTaskAssembly Condition="'$(MSBuildRuntimeType)' != 'Core'">$(MSBuildThisFileDirectory)..\lib\net472\Microsoft.DotNet.SignTool.dll</MicrosoftDotNetSignToolTaskAssembly>
-   </PropertyGroup>
- 
-diff --git a/src/Microsoft.DotNet.SourceBuild/tasks/build/Microsoft.DotNet.SourceBuild.Tasks.props b/src/Microsoft.DotNet.SourceBuild/tasks/build/Microsoft.DotNet.SourceBuild.Tasks.props
-index 9dc4c6cc..a49ee2b6 100644
---- a/src/Microsoft.DotNet.SourceBuild/tasks/build/Microsoft.DotNet.SourceBuild.Tasks.props
-+++ b/src/Microsoft.DotNet.SourceBuild/tasks/build/Microsoft.DotNet.SourceBuild.Tasks.props
-@@ -2,7 +2,7 @@
- <Project>
- 
-   <PropertyGroup>
--    <MicrosoftDotNetSourceBuildTasksAssembly Condition="'$(MSBuildRuntimeType)' == 'core'">$(MSBuildThisFileDirectory)..\tools\net8.0\$(MSBuildThisFileName).dll</MicrosoftDotNetSourceBuildTasksAssembly>
-+    <MicrosoftDotNetSourceBuildTasksAssembly Condition="'$(MSBuildRuntimeType)' == 'core'">$(MSBuildThisFileDirectory)..\tools\net9.0\$(MSBuildThisFileName).dll</MicrosoftDotNetSourceBuildTasksAssembly>
-     <MicrosoftDotNetSourceBuildTasksAssembly Condition="'$(MSBuildRuntimeType)' != 'core'">$(MSBuildThisFileDirectory)..\tools\net472\$(MSBuildThisFileName).dll</MicrosoftDotNetSourceBuildTasksAssembly>
-   </PropertyGroup>
- 
-diff --git a/src/Microsoft.DotNet.SwaggerGenerator/Microsoft.DotNet.SwaggerGenerator.MSBuild/build/Microsoft.DotNet.SwaggerGenerator.MSBuild.props b/src/Microsoft.DotNet.SwaggerGenerator/Microsoft.DotNet.SwaggerGenerator.MSBuild/build/Microsoft.DotNet.SwaggerGenerator.MSBuild.props
-index 5362d800..1ae4e21c 100644
---- a/src/Microsoft.DotNet.SwaggerGenerator/Microsoft.DotNet.SwaggerGenerator.MSBuild/build/Microsoft.DotNet.SwaggerGenerator.MSBuild.props
-+++ b/src/Microsoft.DotNet.SwaggerGenerator/Microsoft.DotNet.SwaggerGenerator.MSBuild/build/Microsoft.DotNet.SwaggerGenerator.MSBuild.props
-@@ -2,7 +2,7 @@
- <Project>
- 
-   <PropertyGroup Condition="'$(MicrosoftDotNetSwaggerGeneratorMSBuildTasksAssembly)' == ''">
--    <MicrosoftDotNetSwaggerGeneratorMSBuildTasksAssembly Condition="'$(MSBuildRuntimeType)' == 'Core'">$(MSBuildThisFileDirectory)../tools/net8.0/Microsoft.DotNet.SwaggerGenerator.MSBuild.dll</MicrosoftDotNetSwaggerGeneratorMSBuildTasksAssembly>
-+    <MicrosoftDotNetSwaggerGeneratorMSBuildTasksAssembly Condition="'$(MSBuildRuntimeType)' == 'Core'">$(MSBuildThisFileDirectory)../tools/net9.0/Microsoft.DotNet.SwaggerGenerator.MSBuild.dll</MicrosoftDotNetSwaggerGeneratorMSBuildTasksAssembly>
-     <MicrosoftDotNetSwaggerGeneratorMSBuildTasksAssembly Condition="'$(MSBuildRuntimeType)' != 'Core'">$(MSBuildThisFileDirectory)../tools/net472/Microsoft.DotNet.SwaggerGenerator.MSBuild.dll</MicrosoftDotNetSwaggerGeneratorMSBuildTasksAssembly>
-   </PropertyGroup>
- 
-diff --git a/src/Microsoft.DotNet.XUnitConsoleRunner/src/build/Microsoft.DotNet.XUnitConsoleRunner.props b/src/Microsoft.DotNet.XUnitConsoleRunner/src/build/Microsoft.DotNet.XUnitConsoleRunner.props
-index 09142a05..0af5cf87 100644
---- a/src/Microsoft.DotNet.XUnitConsoleRunner/src/build/Microsoft.DotNet.XUnitConsoleRunner.props
-+++ b/src/Microsoft.DotNet.XUnitConsoleRunner/src/build/Microsoft.DotNet.XUnitConsoleRunner.props
-@@ -2,7 +2,7 @@
- <Project>
- 
-   <PropertyGroup>
--    <XunitConsoleNetCore21AppPath>$(MSBuildThisFileDirectory)..\tools\net8.0\xunit.console.dll</XunitConsoleNetCore21AppPath>
-+    <XunitConsoleNetCore21AppPath>$(MSBuildThisFileDirectory)..\tools\net9.0\xunit.console.dll</XunitConsoleNetCore21AppPath>
-   </PropertyGroup>
- 
- </Project>
-diff --git a/src/Microsoft.DotNet.XliffTasks/build/Microsoft.DotNet.XliffTasks.targets b/src/Microsoft.DotNet.XliffTasks/build/Microsoft.DotNet.XliffTasks.targets
-index 2bce08cd..d45f1cb2 100644
---- a/src/Microsoft.DotNet.XliffTasks/build/Microsoft.DotNet.XliffTasks.targets
-+++ b/src/Microsoft.DotNet.XliffTasks/build/Microsoft.DotNet.XliffTasks.targets
-@@ -2,7 +2,7 @@
- <Project>
- 
-   <PropertyGroup>
--    <XliffTasksDirectory Condition="'$(XliffTasksDirectory)' == '' and '$(MSBuildRuntimeType)' == 'Core'">$(MSBuildThisFileDirectory)..\tools\net8.0\</XliffTasksDirectory>
-+    <XliffTasksDirectory Condition="'$(XliffTasksDirectory)' == '' and '$(MSBuildRuntimeType)' == 'Core'">$(MSBuildThisFileDirectory)..\tools\net9.0\</XliffTasksDirectory>
-     <XliffTasksDirectory Condition="'$(XliffTasksDirectory)' == '' and '$(MSBuildRuntimeType)' != 'Core'">$(MSBuildThisFileDirectory)..\tools\net472\</XliffTasksDirectory>
-     <XliffTasksAssembly>$(XliffTasksDirectory)Microsoft.DotNet.XliffTasks.dll</XliffTasksAssembly>
-   </PropertyGroup>
diff --git a/src/SourceBuild/patches/arcade/0002-Target-net9.0-for-arcade-projects.patch b/src/SourceBuild/patches/arcade/0002-Target-net9.0-for-arcade-projects.patch
deleted file mode 100644
index 9dd18d1c6..000000000
--- a/src/SourceBuild/patches/arcade/0002-Target-net9.0-for-arcade-projects.patch
+++ /dev/null
@@ -1,22 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Matt Thalman <mthalman@microsoft.com>
-Date: Thu, 16 Nov 2023 14:48:18 -0600
-Subject: [PATCH] Target net9.0 for arcade projects
-
-Backport: https://github.com/dotnet/source-build/issues/3743
----
- Directory.Build.props | 1 +
- 1 file changed, 1 insertion(+)
-
-diff --git a/Directory.Build.props b/Directory.Build.props
-index 32befcfc..2285cc5d 100644
---- a/Directory.Build.props
-+++ b/Directory.Build.props
-@@ -9,6 +9,7 @@
-     <DebugType>embedded</DebugType>
-     <DebugSymbols>true</DebugSymbols>
-     <LangVersion>Latest</LangVersion>
-+    <NetCurrent>net9.0</NetCurrent>
- 
-     <!--
-       Tools and packages produced by this repository support infrastructure and are not shipping on NuGet or via any other official channel.
diff --git a/src/SourceBuild/patches/arcade/0003-Update-NetCurrent-to-net9.0-in-Arcade-SDK.patch b/src/SourceBuild/patches/arcade/0003-Update-NetCurrent-to-net9.0-in-Arcade-SDK.patch
deleted file mode 100644
index 55498b3c7..000000000
--- a/src/SourceBuild/patches/arcade/0003-Update-NetCurrent-to-net9.0-in-Arcade-SDK.patch
+++ /dev/null
@@ -1,28 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Matt Thalman <mthalman@microsoft.com>
-Date: Thu, 16 Nov 2023 14:49:33 -0600
-Subject: [PATCH] Update NetCurrent to net9.0 in Arcade SDK
-
-Backport: https://github.com/dotnet/source-build/issues/3743
----
- .../tools/TargetFrameworkDefaults.props                       | 4 ++--
- 1 file changed, 2 insertions(+), 2 deletions(-)
-
-diff --git a/src/Microsoft.DotNet.Arcade.Sdk/tools/TargetFrameworkDefaults.props b/src/Microsoft.DotNet.Arcade.Sdk/tools/TargetFrameworkDefaults.props
-index b7071a30..0afe2322 100644
---- a/src/Microsoft.DotNet.Arcade.Sdk/tools/TargetFrameworkDefaults.props
-+++ b/src/Microsoft.DotNet.Arcade.Sdk/tools/TargetFrameworkDefaults.props
-@@ -10,11 +10,11 @@
- 
-   <PropertyGroup>
-     <!-- The TFM of the major release of .NET that the Arcade SDK aligns with. -->
--    <NetCurrent>net8.0</NetCurrent>
-+    <NetCurrent>net9.0</NetCurrent>
- 
-     <!-- The previously released version of .NET.
-          Undefined when NetMinimum and NetPrevious are identical. -->
--    <NetPrevious>net7.0</NetPrevious>
-+    <NetPrevious>net8.0</NetPrevious>
- 
-     <!-- Lowest supported version of .NET at the time of the release of NetCurrent.
-          E.g. net6.0 when NetCurrent is net8.0. -->