diff --git a/NuGet.config b/NuGet.config
index 99b1786a057..5b2606e130c 100644
--- a/NuGet.config
+++ b/NuGet.config
@@ -12,12 +12,6 @@
     <!--  Begin: Package sources from dotnet-dotnet -->
     <!--  End: Package sources from dotnet-dotnet -->
     <!--  Begin: Package sources from dotnet-macios -->
-    <add key="darc-pub-dotnet-macios-429e6c1" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-macios-429e6c13/nuget/v3/index.json" />
-    <add key="darc-pub-dotnet-macios-429e6c1-1" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-macios-429e6c13-1/nuget/v3/index.json" />
-    <add key="darc-pub-dotnet-macios-7075bb3" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-macios-7075bb3c/nuget/v3/index.json" />
-    <add key="darc-pub-dotnet-macios-336ee85" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-macios-336ee858/nuget/v3/index.json" />
-    <add key="darc-pub-dotnet-macios-c07f74a" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-macios-c07f74a4/nuget/v3/index.json" />
-    <add key="darc-pub-dotnet-macios-6efb055" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-macios-6efb055f/nuget/v3/index.json" />
     <add key="darc-pub-dotnet-macios-8132813" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-macios-81328139/nuget/v3/index.json" />
     <!--  End: Package sources from dotnet-macios -->
     <!--  Begin: Package sources from dotnet-emsdk -->
diff --git a/eng/Version.Details.props b/eng/Version.Details.props
index 7a8208065f8..7f0f6fb7806 100644
--- a/eng/Version.Details.props
+++ b/eng/Version.Details.props
@@ -6,16 +6,16 @@ This file should be imported by eng/Versions.props
 <Project>
   <PropertyGroup>
     <!-- dotnet-dotnet dependencies -->
-    <MicrosoftDotNetArcadeSdkPackageVersion>11.0.0-beta.26313.102</MicrosoftDotNetArcadeSdkPackageVersion>
-    <MicrosoftDotNetBuildTasksFeedPackageVersion>11.0.0-beta.26313.102</MicrosoftDotNetBuildTasksFeedPackageVersion>
-    <MicrosoftDotNetCecilPackageVersion>0.11.5-preview.26313.102</MicrosoftDotNetCecilPackageVersion>
-    <MicrosoftDotNetSharedFrameworkSdkPackageVersion>11.0.0-beta.26313.102</MicrosoftDotNetSharedFrameworkSdkPackageVersion>
-    <MicrosoftNETILLinkPackageVersion>11.0.0-preview.6.26313.102</MicrosoftNETILLinkPackageVersion>
-    <MicrosoftNETILLinkTasksPackageVersion>11.0.0-preview.6.26313.102</MicrosoftNETILLinkTasksPackageVersion>
-    <MicrosoftNETRuntimeMonoTargetsSdkPackageVersion>11.0.0-preview.6.26313.102</MicrosoftNETRuntimeMonoTargetsSdkPackageVersion>
-    <MicrosoftNETSdkPackageVersion>11.0.100-preview.6.26313.102</MicrosoftNETSdkPackageVersion>
-    <MicrosoftNETCoreAppRefPackageVersion>11.0.0-preview.6.26313.102</MicrosoftNETCoreAppRefPackageVersion>
-    <MicrosoftTemplateEngineAuthoringTasksPackageVersion>11.0.100-preview.6.26313.102</MicrosoftTemplateEngineAuthoringTasksPackageVersion>
+    <MicrosoftDotNetArcadeSdkPackageVersion>11.0.0-beta.26318.105</MicrosoftDotNetArcadeSdkPackageVersion>
+    <MicrosoftDotNetBuildTasksFeedPackageVersion>11.0.0-beta.26318.105</MicrosoftDotNetBuildTasksFeedPackageVersion>
+    <MicrosoftDotNetCecilPackageVersion>0.11.5-preview.26318.105</MicrosoftDotNetCecilPackageVersion>
+    <MicrosoftDotNetSharedFrameworkSdkPackageVersion>11.0.0-beta.26318.105</MicrosoftDotNetSharedFrameworkSdkPackageVersion>
+    <MicrosoftNETILLinkPackageVersion>11.0.0-preview.6.26318.105</MicrosoftNETILLinkPackageVersion>
+    <MicrosoftNETILLinkTasksPackageVersion>11.0.0-preview.6.26318.105</MicrosoftNETILLinkTasksPackageVersion>
+    <MicrosoftNETRuntimeMonoTargetsSdkPackageVersion>11.0.0-preview.6.26318.105</MicrosoftNETRuntimeMonoTargetsSdkPackageVersion>
+    <MicrosoftNETSdkPackageVersion>11.0.100-preview.6.26318.105</MicrosoftNETSdkPackageVersion>
+    <MicrosoftNETCoreAppRefPackageVersion>11.0.0-preview.6.26318.105</MicrosoftNETCoreAppRefPackageVersion>
+    <MicrosoftTemplateEngineAuthoringTasksPackageVersion>11.0.100-preview.6.26318.105</MicrosoftTemplateEngineAuthoringTasksPackageVersion>
     <!-- dotnet-macios dependencies -->
     <MicrosoftiOSSdknet100_260PackageVersion>26.0.11017</MicrosoftiOSSdknet100_260PackageVersion>
     <MicrosoftiOSSdknet100_265PackageVersion>26.5.10291</MicrosoftiOSSdknet100_265PackageVersion>
@@ -26,7 +26,7 @@ This file should be imported by eng/Versions.props
     <MicrosofttvOSSdknet100_260PackageVersion>26.0.11017</MicrosofttvOSSdknet100_260PackageVersion>
     <MicrosofttvOSSdknet100_265PackageVersion>26.5.10291</MicrosofttvOSSdknet100_265PackageVersion>
     <!-- dotnet-xharness dependencies -->
-    <MicrosoftDotNetXHarnessiOSSharedPackageVersion>11.0.0-prerelease.26264.1</MicrosoftDotNetXHarnessiOSSharedPackageVersion>
+    <MicrosoftDotNetXHarnessiOSSharedPackageVersion>11.0.0-prerelease.26217.1</MicrosoftDotNetXHarnessiOSSharedPackageVersion>
   </PropertyGroup>
   <!--Property group for alternate package version names-->
   <PropertyGroup>
diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 96153f65eed..89a1b92f8e5 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -1,29 +1,29 @@
 <Dependencies>
   <ProductDependencies>
-    <Dependency Name="Microsoft.NET.Sdk" Version="11.0.100-preview.6.26313.102">
+    <Dependency Name="Microsoft.NET.Sdk" Version="11.0.100-preview.6.26318.105">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>06787fc66d5364230924d00f2c5c251aeb7a31cd</Sha>
+      <Sha>ae899ea0758628a22feb37a1401ae397cc5fc8d1</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NET.ILLink" Version="11.0.0-preview.6.26313.102">
+    <Dependency Name="Microsoft.NET.ILLink" Version="11.0.0-preview.6.26318.105">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>06787fc66d5364230924d00f2c5c251aeb7a31cd</Sha>
+      <Sha>ae899ea0758628a22feb37a1401ae397cc5fc8d1</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NET.ILLink.Tasks" Version="11.0.0-preview.6.26313.102">
+    <Dependency Name="Microsoft.NET.ILLink.Tasks" Version="11.0.0-preview.6.26318.105">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>06787fc66d5364230924d00f2c5c251aeb7a31cd</Sha>
+      <Sha>ae899ea0758628a22feb37a1401ae397cc5fc8d1</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NET.Runtime.MonoTargets.Sdk" Version="11.0.0-preview.6.26313.102">
+    <Dependency Name="Microsoft.NET.Runtime.MonoTargets.Sdk" Version="11.0.0-preview.6.26318.105">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>06787fc66d5364230924d00f2c5c251aeb7a31cd</Sha>
+      <Sha>ae899ea0758628a22feb37a1401ae397cc5fc8d1</Sha>
     </Dependency>
     <!-- Set TRACKING_DOTNET_RUNTIME_SEPARATELY to something in Make.config if changing the version outside of dependency flow -->
-    <Dependency Name="Microsoft.NETCore.App.Ref" Version="11.0.0-preview.6.26313.102">
+    <Dependency Name="Microsoft.NETCore.App.Ref" Version="11.0.0-preview.6.26318.105">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>06787fc66d5364230924d00f2c5c251aeb7a31cd</Sha>
+      <Sha>ae899ea0758628a22feb37a1401ae397cc5fc8d1</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Cecil" Version="0.11.5-preview.26313.102">
+    <Dependency Name="Microsoft.DotNet.Cecil" Version="0.11.5-preview.26318.105">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>06787fc66d5364230924d00f2c5c251aeb7a31cd</Sha>
+      <Sha>ae899ea0758628a22feb37a1401ae397cc5fc8d1</Sha>
     </Dependency>
     <!-- This is a subscription of the .NET 10/Xcode 26.0 versions of our packages -->
     <Dependency Name="Microsoft.MacCatalyst.Sdk.net10.0_26.0" Version="26.0.11017">
@@ -61,25 +61,25 @@
     </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>
-    <Dependency Name="Microsoft.DotNet.Build.Tasks.Feed" Version="11.0.0-beta.26313.102">
+    <Dependency Name="Microsoft.DotNet.Build.Tasks.Feed" Version="11.0.0-beta.26318.105">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>06787fc66d5364230924d00f2c5c251aeb7a31cd</Sha>
+      <Sha>ae899ea0758628a22feb37a1401ae397cc5fc8d1</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.SharedFramework.Sdk" Version="11.0.0-beta.26313.102">
+    <Dependency Name="Microsoft.DotNet.SharedFramework.Sdk" Version="11.0.0-beta.26318.105">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>06787fc66d5364230924d00f2c5c251aeb7a31cd</Sha>
+      <Sha>ae899ea0758628a22feb37a1401ae397cc5fc8d1</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.TemplateEngine.Authoring.Tasks" Version="11.0.100-preview.6.26313.102">
+    <Dependency Name="Microsoft.TemplateEngine.Authoring.Tasks" Version="11.0.100-preview.6.26318.105">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>06787fc66d5364230924d00f2c5c251aeb7a31cd</Sha>
+      <Sha>ae899ea0758628a22feb37a1401ae397cc5fc8d1</Sha>
     </Dependency>
     <Dependency Name="Microsoft.DotNet.XHarness.iOS.Shared" Version="11.0.0-prerelease.26217.1">
       <Uri>https://github.com/dotnet/xharness</Uri>
       <Sha>866707736d49c2323628744716cda2475b3af9ee</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="11.0.0-beta.26313.102">
+    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="11.0.0-beta.26318.105">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>06787fc66d5364230924d00f2c5c251aeb7a31cd</Sha>
+      <Sha>ae899ea0758628a22feb37a1401ae397cc5fc8d1</Sha>
       <SourceBuild RepoName="arcade" ManagedOnly="true" />
     </Dependency>
   </ToolsetDependencies>
diff --git a/eng/common/build.ps1 b/eng/common/build.ps1
index 4b4f6b0923f..2cbb725323e 100644
--- a/eng/common/build.ps1
+++ b/eng/common/build.ps1
@@ -173,7 +173,11 @@ try {
     if (-not $excludeCIBinarylog) {
       $binaryLog = $true
     }
-    $nodeReuse = $false
+    # Disable node reuse on CI unless explicitly opted in via MSBUILD_NODEREUSE_ENABLED.
+    # Internal testing only; this env var will be replaced with a switch (https://github.com/dotnet/arcade/issues/17013) and must not be depended on.
+    if ($env:MSBUILD_NODEREUSE_ENABLED -ne "1") {
+      $nodeReuse = $false
+    }
   }
 
   if (-not [string]::IsNullOrEmpty($binaryLogName)) {
diff --git a/eng/common/build.sh b/eng/common/build.sh
index 719ee4b5874..3a9fdcfd0f5 100644
--- a/eng/common/build.sh
+++ b/eng/common/build.sh
@@ -213,7 +213,11 @@ if [[ -z "$configuration" ]]; then
 fi
 
 if [[ "$ci" == true ]]; then
-  node_reuse=false
+  # Disable node reuse on CI unless explicitly opted in via MSBUILD_NODEREUSE_ENABLED.
+  # Internal testing only; this env var will be replaced with a switch (https://github.com/dotnet/arcade/issues/17013) and must not be depended on.
+  if [[ "${MSBUILD_NODEREUSE_ENABLED:-}" != "1" ]]; then
+    node_reuse=false
+  fi
   if [[ "$exclude_ci_binary_log" == false ]]; then
     binary_log=true
   fi
diff --git a/eng/common/dotnet.ps1 b/eng/common/dotnet.ps1
index 45e5676c9eb..ce4ea40730a 100644
--- a/eng/common/dotnet.ps1
+++ b/eng/common/dotnet.ps1
@@ -8,4 +8,5 @@ $dotnetRoot = InitializeDotNetCli -install:$true
 if ($args.count -gt 0) {
   $env:DOTNET_NOLOGO=1
   & "$dotnetRoot\dotnet.exe" $args
+  ExitWithExitCode $LASTEXITCODE
 }
diff --git a/eng/common/msbuild.ps1 b/eng/common/msbuild.ps1
index f041e5ddd95..495d533a909 100644
--- a/eng/common/msbuild.ps1
+++ b/eng/common/msbuild.ps1
@@ -14,7 +14,11 @@ Param(
 
 try {
   if ($ci) {
-    $nodeReuse = $false
+    # Disable node reuse on CI unless explicitly opted in via MSBUILD_NODEREUSE_ENABLED.
+    # Internal testing only; this env var will be replaced with a switch (https://github.com/dotnet/arcade/issues/17013) and must not be depended on.
+    if ($env:MSBUILD_NODEREUSE_ENABLED -ne "1") {
+      $nodeReuse = $false
+    }
   }
 
   MSBuild @extraArgs
diff --git a/eng/common/msbuild.sh b/eng/common/msbuild.sh
index 20d3dad5435..333be3232fc 100644
--- a/eng/common/msbuild.sh
+++ b/eng/common/msbuild.sh
@@ -51,7 +51,11 @@ done
 . "$scriptroot/tools.sh"
 
 if [[ "$ci" == true ]]; then
-  node_reuse=false
+  # Disable node reuse on CI unless explicitly opted in via MSBUILD_NODEREUSE_ENABLED.
+  # Internal testing only; this env var will be replaced with a switch (https://github.com/dotnet/arcade/issues/17013) and must not be depended on.
+  if [[ "${MSBUILD_NODEREUSE_ENABLED:-}" != "1" ]]; then
+    node_reuse=false
+  fi
 fi
 
 MSBuild $extra_args
diff --git a/eng/common/native/NativeAotSupported.props b/eng/common/native/NativeAotSupported.props
new file mode 100644
index 00000000000..559a6663929
--- /dev/null
+++ b/eng/common/native/NativeAotSupported.props
@@ -0,0 +1,26 @@
+<Project>
+  <PropertyGroup>
+
+    <!-- Reject unsupported OS via RID prefix match -->
+    <_NativeAotSupportedOS Condition="
+      '$(TargetOS)' != 'browser' and
+      '$(TargetOS)' != 'haiku' and
+      '$(TargetOS)' != 'illumos' and
+      '$(TargetOS)' != 'netbsd' and
+      '$(TargetOS)' != 'solaris'
+    ">true</_NativeAotSupportedOS>
+
+    <!-- Reject unsupported architectures via RID suffix match -->
+    <_NativeAotSupportedArch Condition="
+      '$(TargetArchitecture)' != 'wasm' and
+      ('$(TargetArchitecture)' != 'x86' or '$(TargetOS)' == 'windows')
+    ">true</_NativeAotSupportedArch>
+
+    <NativeAotSupported Condition="
+      '$(NativeAotSupported)' == '' and
+      '$(_NativeAotSupportedOS)' == 'true' and
+      '$(_NativeAotSupportedArch)' == 'true'
+    ">true</NativeAotSupported>
+
+  </PropertyGroup>
+</Project>
diff --git a/eng/common/tools.ps1 b/eng/common/tools.ps1
index fc72fe63049..de32a6da377 100644
--- a/eng/common/tools.ps1
+++ b/eng/common/tools.ps1
@@ -742,7 +742,9 @@ function MSBuild() {
       ExitWithExitCode 1
     }
 
-    if ($nodeReuse) {
+    # Node reuse must be disabled in CI builds unless explicitly opted in via MSBUILD_NODEREUSE_ENABLED.
+    # Internal testing only; this env var will be replaced with a switch (https://github.com/dotnet/arcade/issues/17013) and must not be depended on.
+    if ($nodeReuse -and $env:MSBUILD_NODEREUSE_ENABLED -ne "1") {
       Write-PipelineTelemetryError -Category 'Build' -Message 'Node reuse must be disabled in CI build.'
       ExitWithExitCode 1
     }
diff --git a/eng/common/tools.sh b/eng/common/tools.sh
index 48cab70ebf4..05f9edd0aae 100644
--- a/eng/common/tools.sh
+++ b/eng/common/tools.sh
@@ -497,7 +497,9 @@ function MSBuild {
       ExitWithExitCode 1
     fi
 
-    if [[ "$node_reuse" == true ]]; then
+    # Node reuse must be disabled in CI builds unless explicitly opted in via MSBUILD_NODEREUSE_ENABLED.
+    # Internal testing only; this env var will be replaced with a switch (https://github.com/dotnet/arcade/issues/17013) and must not be depended on.
+    if [[ "$node_reuse" == true && "${MSBUILD_NODEREUSE_ENABLED:-}" != "1" ]]; then
       Write-PipelineTelemetryError -category 'Build'  "Node reuse must be disabled in CI build."
       ExitWithExitCode 1
     fi
diff --git a/global.json b/global.json
index 9183af3bbec..d47e35f96c5 100644
--- a/global.json
+++ b/global.json
@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "11.0.100-preview.6.26313.102",
+    "version": "11.0.100-preview.6.26318.105",
     "paths": [
       "builds/downloads/dotnet",
       "$host$"
@@ -8,9 +8,9 @@
     "errorMessage": "The .NET SDK could not be found, please run 'make dotnet -C builds'."
   },
   "tools": {
-    "dotnet": "11.0.100-preview.6.26313.102"
+    "dotnet": "11.0.100-preview.6.26318.105"
   },
   "msbuild-sdks": {
-    "Microsoft.DotNet.Arcade.Sdk": "11.0.0-beta.26313.102"
+    "Microsoft.DotNet.Arcade.Sdk": "11.0.0-beta.26318.105"
   }
 }