diff --git a/NuGet.config b/NuGet.config
index 9f4127a7b2..7d005347e1 100644
--- a/NuGet.config
+++ b/NuGet.config
@@ -6,7 +6,6 @@
     <add key="dotnet-eng" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json" />
     <add key="dotnet-tools" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json" />
     <add key="dotnet-libraries" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-libraries/nuget/v3/index.json" />
-    <add key="dotnet11" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet11/nuget/v3/index.json" />
   </packageSources>
   <disabledPackageSources />
 </configuration>
diff --git a/eng/Version.Details.props b/eng/Version.Details.props
index b7c204020e..c0f8e7a8df 100644
--- a/eng/Version.Details.props
+++ b/eng/Version.Details.props
@@ -6,7 +6,7 @@ This file should be imported by eng/Versions.props
 <Project>
   <PropertyGroup>
     <!-- dotnet/dotnet dependencies -->
-    <MicrosoftDotNetArcadeSdkPackageVersion>11.0.0-beta.26076.102</MicrosoftDotNetArcadeSdkPackageVersion>
+    <MicrosoftDotNetArcadeSdkPackageVersion>11.0.0-beta.26118.109</MicrosoftDotNetArcadeSdkPackageVersion>
   </PropertyGroup>
   <!--Property group for alternate package version names-->
   <PropertyGroup>
diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 9c913da74f..1d76650332 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -1,12 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Dependencies>
-  <Source Uri="https://github.com/dotnet/dotnet" Mapping="command-line-api" Sha="93b03446d269bf71bb3ab1cce56e696913709c8a" BarId="298921" />
+  <Source Uri="https://github.com/dotnet/dotnet" Mapping="command-line-api" Sha="4c0aa722933ea491006247bbc0a484fa3c28cd14" BarId="302348" />
   <ProductDependencies>
   </ProductDependencies>
   <ToolsetDependencies>
-    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="11.0.0-beta.26076.102">
+    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="11.0.0-beta.26118.109">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>93b03446d269bf71bb3ab1cce56e696913709c8a</Sha>
+      <Sha>4c0aa722933ea491006247bbc0a484fa3c28cd14</Sha>
     </Dependency>
   </ToolsetDependencies>
 </Dependencies>
diff --git a/eng/Versions.props b/eng/Versions.props
index 272df2104f..9581afb5ef 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -5,7 +5,7 @@
   <PropertyGroup>
     <VersionPrefix>3.0.0</VersionPrefix>
     <PreReleaseVersionLabel>preview</PreReleaseVersionLabel>
-    <PreReleaseVersionIteration>1</PreReleaseVersionIteration>
+    <PreReleaseVersionIteration>3</PreReleaseVersionIteration>
     <!-- Allowed values: '', 'prerelease', 'release'. Set to 'release' when stabilizing. -->
     <DotNetFinalVersionKind></DotNetFinalVersionKind>
   </PropertyGroup>
diff --git a/eng/common/core-templates/job/source-build.yml b/eng/common/core-templates/job/source-build.yml
index 7322e88bea..1997c2ae00 100644
--- a/eng/common/core-templates/job/source-build.yml
+++ b/eng/common/core-templates/job/source-build.yml
@@ -60,19 +60,19 @@ jobs:
       pool:
         ${{ if eq(variables['System.TeamProject'], 'public') }}:
           name: $[replace(replace(eq(contains(coalesce(variables['System.PullRequest.TargetBranch'], variables['Build.SourceBranch'], 'refs/heads/main'), 'release'), 'true'), True, 'NetCore-Svc-Public' ), False, 'NetCore-Public')]
-          demands: ImageOverride -equals build.ubuntu.2204.amd64
+          demands: ImageOverride -equals build.azurelinux.3.amd64.open
         ${{ if eq(variables['System.TeamProject'], 'internal') }}:
           name: $[replace(replace(eq(contains(coalesce(variables['System.PullRequest.TargetBranch'], variables['Build.SourceBranch'], 'refs/heads/main'), 'release'), 'true'), True, 'NetCore1ESPool-Svc-Internal'), False, 'NetCore1ESPool-Internal')]
-          image: Azure-Linux-3-Amd64
+          image: build.azurelinux.3.amd64
           os: linux
     ${{ else }}:
       pool:
         ${{ if eq(variables['System.TeamProject'], 'public') }}:
           name: $[replace(replace(eq(contains(coalesce(variables['System.PullRequest.TargetBranch'], variables['Build.SourceBranch'], 'refs/heads/main'), 'release'), 'true'), True, 'NetCore-Svc-Public' ), False, 'NetCore-Public')]
-          demands: ImageOverride -equals Build.Ubuntu.2204.Amd64.Open
+          demands: ImageOverride -equals build.azurelinux.3.amd64.open
         ${{ if eq(variables['System.TeamProject'], 'internal') }}:
           name: $[replace(replace(eq(contains(coalesce(variables['System.PullRequest.TargetBranch'], variables['Build.SourceBranch'], 'refs/heads/main'), 'release'), 'true'), True, 'NetCore1ESPool-Svc-Internal'), False, 'NetCore1ESPool-Internal')]
-          demands: ImageOverride -equals Build.Ubuntu.2204.Amd64
+          demands: ImageOverride -equals build.azurelinux.3.amd64
   ${{ if ne(parameters.platform.pool, '') }}:
     pool: ${{ parameters.platform.pool }}
 
diff --git a/eng/common/cross/build-rootfs.sh b/eng/common/cross/build-rootfs.sh
index 9b7eede4e5..ef97671fe6 100755
--- a/eng/common/cross/build-rootfs.sh
+++ b/eng/common/cross/build-rootfs.sh
@@ -295,9 +295,7 @@ while :; do
             ;;
         noble) # Ubuntu 24.04
             __CodeName=noble
-            if [[ -z "$__LLDB_Package" ]]; then
-                __LLDB_Package="liblldb-19-dev"
-            fi
+            __LLDB_Package="liblldb-19-dev"
             ;;
         stretch) # Debian 9
             __CodeName=stretch
diff --git a/eng/common/native/install-dependencies.sh b/eng/common/native/install-dependencies.sh
index 11f81cbd40..abb47beacf 100755
--- a/eng/common/native/install-dependencies.sh
+++ b/eng/common/native/install-dependencies.sh
@@ -24,16 +24,16 @@ case "$os" in
             apt update
 
             apt install -y build-essential gettext locales cmake llvm clang lld lldb liblldb-dev libunwind8-dev libicu-dev liblttng-ust-dev \
-                libssl-dev libkrb5-dev pigz cpio
+                libssl-dev libkrb5-dev pigz cpio ninja-build
 
             localedef -i en_US -c -f UTF-8 -A /usr/share/locale/locale.alias en_US.UTF-8
         elif [ "$ID" = "fedora" ] || [ "$ID" = "rhel" ] || [ "$ID" = "azurelinux" ] || [ "$ID" = "centos" ]; then
             pkg_mgr="$(command -v tdnf 2>/dev/null || command -v dnf)"
-            $pkg_mgr install -y cmake llvm lld lldb clang python curl libicu-devel openssl-devel krb5-devel lttng-ust-devel pigz cpio
+            $pkg_mgr install -y cmake llvm lld lldb clang python curl libicu-devel openssl-devel krb5-devel lttng-ust-devel pigz cpio ninja-build
         elif [ "$ID" = "amzn" ]; then
-            dnf install -y cmake llvm lld lldb clang python libicu-devel openssl-devel krb5-devel lttng-ust-devel pigz cpio
+            dnf install -y cmake llvm lld lldb clang python libicu-devel openssl-devel krb5-devel lttng-ust-devel pigz cpio ninja-build
         elif [ "$ID" = "alpine" ]; then
-            apk add build-base cmake bash curl clang llvm-dev lld lldb krb5-dev lttng-ust-dev icu-dev openssl-dev pigz cpio
+            apk add build-base cmake bash curl clang llvm-dev lld lldb krb5-dev lttng-ust-dev icu-dev openssl-dev pigz cpio ninja
         else
             echo "Unsupported distro. distro: $ID"
             exit 1
@@ -54,6 +54,7 @@ brew "openssl@3"
 brew "pkgconf"
 brew "python3"
 brew "pigz"
+brew "ninja"
 EOF
         ;;
 
diff --git a/eng/common/templates/steps/vmr-sync.yml b/eng/common/templates/steps/vmr-sync.yml
index 599afb6186..eb619c5026 100644
--- a/eng/common/templates/steps/vmr-sync.yml
+++ b/eng/common/templates/steps/vmr-sync.yml
@@ -38,27 +38,6 @@ steps:
   displayName: Label PR commit
   workingDirectory: $(Agent.BuildDirectory)/repo
 
-- script: |
-    vmr_sha=$(grep -oP '(?<=Sha=")[^"]*' $(Agent.BuildDirectory)/repo/eng/Version.Details.xml)
-    echo "##vso[task.setvariable variable=vmr_sha]$vmr_sha"
-  displayName: Obtain the vmr sha from Version.Details.xml (Unix)
-  condition: ne(variables['Agent.OS'], 'Windows_NT')
-  workingDirectory: $(Agent.BuildDirectory)/repo
-
-- powershell: |
-    [xml]$xml = Get-Content -Path $(Agent.BuildDirectory)/repo/eng/Version.Details.xml
-    $vmr_sha = $xml.SelectSingleNode("//Source").Sha
-    Write-Output "##vso[task.setvariable variable=vmr_sha]$vmr_sha"
-  displayName: Obtain the vmr sha from Version.Details.xml (Windows)
-  condition: eq(variables['Agent.OS'], 'Windows_NT')
-  workingDirectory: $(Agent.BuildDirectory)/repo
-
-- script: |
-    git fetch --all
-    git checkout $(vmr_sha)
-  displayName: Checkout VMR at correct sha for repo flow
-  workingDirectory: ${{ parameters.vmrPath }}
-
 - script: |
     git config --global user.name "dotnet-maestro[bot]"
     git config --global user.email "dotnet-maestro[bot]@users.noreply.github.com"
diff --git a/eng/common/templates/vmr-build-pr.yml b/eng/common/templates/vmr-build-pr.yml
index ce3c29a62f..2f3694fa13 100644
--- a/eng/common/templates/vmr-build-pr.yml
+++ b/eng/common/templates/vmr-build-pr.yml
@@ -34,6 +34,7 @@ resources:
     type: github
     name: dotnet/dotnet
     endpoint: dotnet
+    ref: refs/heads/main # Set to whatever VMR branch the PR build should insert into
 
 stages:
 - template: /eng/pipelines/templates/stages/vmr-build.yml@vmr
diff --git a/eng/common/tools.ps1 b/eng/common/tools.ps1
index f6bde26837..01296ee601 100644
--- a/eng/common/tools.ps1
+++ b/eng/common/tools.ps1
@@ -588,6 +588,11 @@ function LocateVisualStudio([object]$vsRequirements = $null){
     return $null
   }
 
+  if ($null -eq $vsInfo -or $vsInfo.Count -eq 0) {
+    throw "No instance of Visual Studio meeting the requirements specified was found. Requirements: $($args -join ' ')"
+    return $null
+  }
+
   # use first matching instance
   return $vsInfo[0]
 }
@@ -820,6 +825,11 @@ function MSBuild-Core() {
 
   $cmdArgs = "$($buildTool.Command) /m /nologo /clp:Summary /v:$verbosity /nr:$nodeReuse /p:ContinuousIntegrationBuild=$ci"
 
+  # Add -mt flag for MSBuild multithreaded mode if enabled via environment variable
+  if ($env:MSBUILD_MT_ENABLED -eq "1") {
+    $cmdArgs += ' -mt'
+  }
+
   if ($warnAsError) {
     $cmdArgs += ' /warnaserror /p:TreatWarningsAsErrors=true'
   }
diff --git a/eng/common/tools.sh b/eng/common/tools.sh
index 6c121300ac..edc7b128cf 100755
--- a/eng/common/tools.sh
+++ b/eng/common/tools.sh
@@ -522,7 +522,13 @@ function MSBuild-Core {
     }
   }
 
-  RunBuildTool "$_InitializeBuildToolCommand" /m /nologo /clp:Summary /v:$verbosity /nr:$node_reuse $warnaserror_switch /p:TreatWarningsAsErrors=$warn_as_error /p:ContinuousIntegrationBuild=$ci "$@"
+  # Add -mt flag for MSBuild multithreaded mode if enabled via environment variable
+  local mt_switch=""
+  if [[ "${MSBUILD_MT_ENABLED:-}" == "1" ]]; then
+    mt_switch="-mt"
+  fi
+
+  RunBuildTool "$_InitializeBuildToolCommand" /m /nologo /clp:Summary /v:$verbosity /nr:$node_reuse $warnaserror_switch $mt_switch /p:TreatWarningsAsErrors=$warn_as_error /p:ContinuousIntegrationBuild=$ci "$@"
 }
 
 function GetDarc {
diff --git a/eng/common/vmr-sync.ps1 b/eng/common/vmr-sync.ps1
index 97302f3205..b37992d91c 100755
--- a/eng/common/vmr-sync.ps1
+++ b/eng/common/vmr-sync.ps1
@@ -103,12 +103,20 @@ Set-StrictMode -Version Latest
 Highlight 'Installing .NET, preparing the tooling..'
 . .\eng\common\tools.ps1
 $dotnetRoot = InitializeDotNetCli -install:$true
+$env:DOTNET_ROOT = $dotnetRoot
 $darc = Get-Darc
-$dotnet = "$dotnetRoot\dotnet.exe"
 
 Highlight "Starting the synchronization of VMR.."
 
 # Synchronize the VMR
+$versionDetailsPath = Resolve-Path (Join-Path $PSScriptRoot '..\Version.Details.xml') | Select-Object -ExpandProperty Path
+[xml]$versionDetails = Get-Content -Path $versionDetailsPath
+$repoName = $versionDetails.SelectSingleNode('//Source').Mapping
+if (-not $repoName) {
+  Fail "Failed to resolve repo mapping from $versionDetailsPath"
+  exit 1
+}
+
 $darcArgs = (
   "vmr", "forwardflow",
   "--tmp", $tmpDir,
@@ -130,9 +138,27 @@ if ($LASTEXITCODE -eq 0) {
   Highlight "Synchronization succeeded"
 }
 else {
-  Fail "Synchronization of repo to VMR failed!"
-  Fail "'$vmrDir' is left in its last state (re-run of this script will reset it)."
-  Fail "Please inspect the logs which contain path to the failing patch file (use -debugOutput to get all the details)."
-  Fail "Once you make changes to the conflicting VMR patch, commit it locally and re-run this script."
-  exit 1
+  Highlight "Failed to flow code into the local VMR. Falling back to resetting the VMR to match repo contents..."
+  git -C $vmrDir reset --hard
+
+  $resetArgs = (
+    "vmr", "reset",
+    "${repoName}:HEAD",
+    "--vmr", $vmrDir,
+    "--tmp", $tmpDir,
+    "--additional-remotes", "${repoName}:${repoRoot}"
+  )
+
+  & "$darc" $resetArgs
+
+  if ($LASTEXITCODE -eq 0) {
+    Highlight "Successfully reset the VMR using 'darc vmr reset'"
+  }
+  else {
+    Fail "Synchronization of repo to VMR failed!"
+    Fail "'$vmrDir' is left in its last state (re-run of this script will reset it)."
+    Fail "Please inspect the logs which contain path to the failing patch file (use -debugOutput to get all the details)."
+    Fail "Once you make changes to the conflicting VMR patch, commit it locally and re-run this script."
+    exit 1
+  }
 }
diff --git a/eng/common/vmr-sync.sh b/eng/common/vmr-sync.sh
index 44239e331c..198caec59b 100755
--- a/eng/common/vmr-sync.sh
+++ b/eng/common/vmr-sync.sh
@@ -186,6 +186,13 @@ fi
 
 # Synchronize the VMR
 
+version_details_path=$(cd "$scriptroot/.."; pwd -P)/Version.Details.xml
+repo_name=$(grep -m 1 '<Source ' "$version_details_path" | sed -n 's/.*Mapping="\([^"]*\)".*/\1/p')
+if [[ -z "$repo_name" ]]; then
+  fail "Failed to resolve repo mapping from $version_details_path"
+  exit 1
+fi
+
 export DOTNET_ROOT="$dotnetDir"
 
 "$darc_tool" vmr forwardflow \
@@ -199,9 +206,22 @@ export DOTNET_ROOT="$dotnetDir"
 if [[ $? == 0 ]]; then
   highlight "Synchronization succeeded"
 else
-  fail "Synchronization of repo to VMR failed!"
-  fail "'$vmr_dir' is left in its last state (re-run of this script will reset it)."
-  fail "Please inspect the logs which contain path to the failing patch file (use --debug to get all the details)."
-  fail "Once you make changes to the conflicting VMR patch, commit it locally and re-run this script."
-  exit 1
+  highlight "Failed to flow code into the local VMR. Falling back to resetting the VMR to match repo contents..."
+  git -C "$vmr_dir" reset --hard
+
+  "$darc_tool" vmr reset \
+    "$repo_name:HEAD"                              \
+    --vmr "$vmr_dir"                               \
+    --tmp "$tmp_dir"                               \
+    --additional-remotes "$repo_name:$repo_root"
+
+  if [[ $? == 0 ]]; then
+    highlight "Successfully reset the VMR using 'darc vmr reset'"
+  else
+    fail "Synchronization of repo to VMR failed!"
+    fail "'$vmr_dir' is left in its last state (re-run of this script will reset it)."
+    fail "Please inspect the logs which contain path to the failing patch file (use --debug to get all the details)."
+    fail "Once you make changes to the conflicting VMR patch, commit it locally and re-run this script."
+    exit 1
+  fi
 fi
diff --git a/global.json b/global.json
index 8cfe481642..7ffde52bbc 100644
--- a/global.json
+++ b/global.json
@@ -1,11 +1,11 @@
 {
   "sdk": {
-    "version": "11.0.100-alpha.1.26064.118",
+    "version": "11.0.100-preview.1.26104.118",
     "allowPrerelease": true,
     "rollForward": "major"
   },
   "tools": {
-    "dotnet": "11.0.100-alpha.1.26064.118",
+    "dotnet": "11.0.100-preview.1.26104.118",
     "runtimes": {
       "dotnet": [
         "10.0.2"
@@ -13,6 +13,6 @@
     }
   },
   "msbuild-sdks": {
-    "Microsoft.DotNet.Arcade.Sdk": "11.0.0-beta.26076.102"
+    "Microsoft.DotNet.Arcade.Sdk": "11.0.0-beta.26118.109"
   }
 }