diff --git a/NuGet.config b/NuGet.config
index 7812fc325d56d..f39fab9df8ec4 100644
--- a/NuGet.config
+++ b/NuGet.config
@@ -17,6 +17,8 @@
     <add key="dotnet-eng" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json" />
     <add key="dotnet6" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet6/nuget/v3/index.json" />
     <add key="dotnet6-transport" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet6-transport/nuget/v3/index.json" />
+    <!-- Used for dotnet pack task -->
+    <add key="nuget-build" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/nuget-build/nuget/v3/index.json" />
     <!-- Used for the Rich Navigation indexing task -->
     <add key="richnav" value="https://pkgs.dev.azure.com/azure-public/vside/_packaging/vs-buildservices/nuget/v3/index.json" />
   </packageSources>
diff --git a/eng/Versions.props b/eng/Versions.props
index 765b461a291b2..1c8ae0b1d33b0 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -64,7 +64,7 @@
     <MicrosoftDotNetVersionToolsTasksVersion>6.0.0-beta.21330.2</MicrosoftDotNetVersionToolsTasksVersion>
     <MicrosoftDotNetPackageTestingVersion>6.0.0-beta.21330.2</MicrosoftDotNetPackageTestingVersion>
     <!-- NuGet dependencies -->
-    <NuGetBuildTasksPackVersion>5.9.0-preview.2</NuGetBuildTasksPackVersion>
+    <NuGetBuildTasksPackVersion>6.0.0-preview.1.102</NuGetBuildTasksPackVersion>
     <!-- Installer dependencies -->
     <MicrosoftNETCoreAppVersion>6.0.0-alpha.1.20612.4</MicrosoftNETCoreAppVersion>
     <MicrosoftNETCoreDotNetHostVersion>6.0.0-preview.7.21321.2</MicrosoftNETCoreDotNetHostVersion>
diff --git a/eng/packaging.props b/eng/packaging.props
index 534d3ddcf321b..9e992bbf7a310 100644
--- a/eng/packaging.props
+++ b/eng/packaging.props
@@ -13,6 +13,7 @@
     <PackageVersion Condition="'$(PackageVersion)' == '' and '$(MSBuildProjectExtension)' == '.pkgproj'">6.0.0</PackageVersion>
     <SkipValidatePackageTargetFramework>true</SkipValidatePackageTargetFramework>
     <SkipGenerationCheck>true</SkipGenerationCheck>
+    <DefaultAllowedOutputExtensionsInPackageBuildOutputFolder>.dll;.exe;.winmd;.json;.pri;</DefaultAllowedOutputExtensionsInPackageBuildOutputFolder>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(DotNetBuildFromSource)' == 'true'">
@@ -29,10 +30,6 @@
 
   <Import Condition="Exists('$(PkgDir)baseline\baseline.props') and '$(MSBuildProjectExtension)' == '.pkgproj'" Project="$(PkgDir)baseline\baseline.props" />
 
-  <PropertyGroup Condition="'$(IsPackable)' == 'true'">
-    <PackageDesignerMarkerFile>$(MSBuildThisFileDirectory)useSharedDesignerContext.txt</PackageDesignerMarkerFile>
-  </PropertyGroup>
-
   <ItemGroup Condition="'$(IsPackable)' == 'true'">
     <!-- Add a marker to help the designer optimize & share .NET Core packages -->
     <None Include="$(PackageDesignerMarkerFile)"
@@ -50,4 +47,9 @@
       <RuntimeIDs>@(NETCoreApp30RIDs)</RuntimeIDs>
     </DefaultValidateFramework>
   </ItemGroup>
+
+  <!-- TODO: Remove when all required nuget pack features are part of the consumed SDK. -->
+  <ItemGroup Condition="'$(IsPackable)' == 'true' and '$(IsSourceProject)' == 'true'">
+    <PackageReference Include="NuGet.Build.Tasks.Pack" Version="$(NuGetBuildTasksPackVersion)" PrivateAssets="all" IsImplicitlyDefined="true" />
+  </ItemGroup>
 </Project>
diff --git a/eng/packaging.targets b/eng/packaging.targets
index 1f19f57c98a6d..d6344a0b666d7 100644
--- a/eng/packaging.targets
+++ b/eng/packaging.targets
@@ -1,4 +1,15 @@
 <Project InitialTargets="_OverridePackDependsOnForCsProjToPkgProj">
+  
+  <PropertyGroup Condition="'$(IsPackable)' == 'true'">
+    <TargetsForTfmSpecificContentInPackage>$(TargetsForTfmSpecificContentInPackage);AddRuntimeSpecificAssemblies;LibIntellisenseDocs</TargetsForTfmSpecificContentInPackage>
+    <TargetsForTfmSpecificDebugSymbolsInPackage>$(TargetsForTfmSpecificDebugSymbolsInPackage);AddRuntimeDebugSymbolsWithTfm</TargetsForTfmSpecificDebugSymbolsInPackage>
+    <IncludeBuildOutput Condition="'$(TargetsAnyOS)' != 'true' or '$(ExcludeFromPackage)' == 'true'">false</IncludeBuildOutput>  
+    <!-- Don't include target platform specific dependencies, since we use the target platform to represent RIDs instead -->
+    <SuppressDependenciesWhenPacking Condition="'$(ExcludeFromPackage)' == 'true' or ('$(TargetsAnyOS)' != 'true' and $([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net5.0')))">true</SuppressDependenciesWhenPacking>
+    <PackageDesignerMarkerFile>$(MSBuildThisFileDirectory)useSharedDesignerContext.txt</PackageDesignerMarkerFile>
+    <PackageValidationBaselineVersion Condition="'$(PackageValidationBaselineVersion)' == ''">$([MSBuild]::Subtract($(MajorVersion), 1)).0.0</PackageValidationBaselineVersion>
+  </PropertyGroup>
+
   <!--     There are some packages where we require only one ref for a specific framework to be present. In order to avoid problems with this package when targetting 
            dektop with RAR we will make sure there are no exclude=compile references in the package.
     For more info, please check issues:
@@ -42,4 +53,30 @@
     <MSBuild Projects="$(PkgProjPath)"
              Targets="Build" />
   </Target>
+
+  <Target Name="AddRuntimeSpecificAssemblies"
+          DependsOnTargets="BuiltProjectOutputGroup;SatelliteDllsProjectOutputGroup;$(TargetsForTfmSpecificBuildOutput)"
+          Condition="'$(TargetsAnyOS)' != 'true' and '$(ExcludeFromPackage)' == ''">
+    <ItemGroup>
+      <TfmSpecificPackageFile Include="@(SatelliteDllsProjectOutputGroupOutput);
+                            @(BuiltProjectOutputGroupOutput)">
+        <PackagePath>runtimes/$(_runtimeOS)/lib/$(TargetFrameworkWithoutSuffix)</PackagePath>
+      </TfmSpecificPackageFile>
+    </ItemGroup>
+  </Target>
+
+  <!-- Runtime independent symbols are automatically added by the pack task.-->
+  <Target Name="AddRuntimeDebugSymbolsWithTfm"
+          Condition="'$(IncludeSymbols)' == 'true' and '$(TargetsAnyOS)' != 'true' and '$(ExcludeFromPackage)' == ''">
+    <PropertyGroup>
+      <RuntimeSymbolPath>$([System.IO.Path]::GetDirectoryName($(TargetPath)))\$(TargetName).pdb</RuntimeSymbolPath>
+    </PropertyGroup>
+
+    <ItemGroup Condition="Exists('$(RuntimeSymbolPath)')">
+      <TfmSpecificDebugSymbolsFile Include="$(RuntimeSymbolPath)">
+        <TargetPath>/runtimes/$(_runtimeOS)/lib/$(TargetFrameworkWithoutSuffix)/$(TargetName).pdb</TargetPath>
+        <TargetFramework>$(TargetFrameworkWithoutSuffix)</TargetFramework>
+      </TfmSpecificDebugSymbolsFile>
+    </ItemGroup>
+  </Target>
 </Project>
diff --git a/global.json b/global.json
index 9650ac9e9ad46..ca21d08dc3bb1 100644
--- a/global.json
+++ b/global.json
@@ -13,7 +13,7 @@
   },
   "msbuild-sdks": {
     "Microsoft.DotNet.Build.Tasks.TargetFramework.Sdk": "6.0.0-beta.21330.3",
-    "Microsoft.DotNet.PackageValidation": "1.0.0-preview.6.21274.7",
+    "Microsoft.DotNet.PackageValidation": "1.0.0-preview.7.21352.4",
     "Microsoft.DotNet.Arcade.Sdk": "6.0.0-beta.21330.2",
     "Microsoft.DotNet.Helix.Sdk": "6.0.0-beta.21330.2",
     "Microsoft.DotNet.SharedFramework.Sdk": "6.0.0-beta.21330.3",
diff --git a/src/libraries/Directory.Build.targets b/src/libraries/Directory.Build.targets
index b10705260f4fc..b330933c28035 100644
--- a/src/libraries/Directory.Build.targets
+++ b/src/libraries/Directory.Build.targets
@@ -17,7 +17,6 @@
     <NetCoreAppCurrentTestHostPath>$([MSBuild]::NormalizeDirectory('$(ArtifactsBinDir)', 'testhost', '$(NetCoreAppCurrentBuildSettings)'))</NetCoreAppCurrentTestHostPath>
     <NetCoreAppCurrentTestHostSharedFrameworkPath>$([MSBuild]::NormalizeDirectory('$(NetCoreAppCurrentTestHostPath)', 'shared', '$(MicrosoftNetCoreAppFrameworkName)', '$(ProductVersion)'))</NetCoreAppCurrentTestHostSharedFrameworkPath>
     
-    <TargetsForTfmSpecificContentInPackage Condition="'$(IsPackable)' == 'true'">$(TargetsForTfmSpecificContentInPackage);LibIntellisenseDocs</TargetsForTfmSpecificContentInPackage>
     <SymbolPackageOutputPath>$(PackageOutputPath)</SymbolPackageOutputPath>
 
     <NoWarn Condition="'$(TargetFrameworkIdentifier)' == '.NETFramework' or '$(TargetFrameworkIdentifier)' == '.NETStandard' or ('$(TargetFrameworkIdentifier)' == '.NETCoreApp' and $([MSBuild]::VersionLessThan($(TargetFrameworkVersion), '3.0')))">$(NoWarn);nullable</NoWarn>
@@ -145,11 +144,6 @@
 
   <Import Sdk="Microsoft.DotNet.PackageValidation" Project="Sdk.targets" Condition="'$(IsSourceProject)' == 'true' and !Exists('$(PkgProjPath)')" />
 
-  <PropertyGroup>
-    <PackageValidationBaselineVersion Condition="'$(PackageValidationBaselineVersion)' == ''">$([MSBuild]::Subtract($(MajorVersion), 1)).0.0</PackageValidationBaselineVersion>
-    <EnablePackageBaselineValidation Condition="'$(IsPackable)' == 'true' and '$(MSBuildProjectExtension)' != '.pkgproj' and '$(EnablePackageBaselineValidation)' == ''">true</EnablePackageBaselineValidation>
-  </PropertyGroup>
-
   <Target Name="SetGenApiProperties"
           BeforeTargets="GenerateReferenceAssemblySource">
     <PropertyGroup>
@@ -235,11 +229,6 @@
     <Compile Include="$(CoreLibSharedDir)System\Diagnostics\CodeAnalysis\NullableAttributes.cs" Link="System\Diagnostics\CodeAnalysis\NullableAttributes.cs" />
   </ItemGroup>
 
-  <PropertyGroup Condition="'$(IsCrossTargetingBuild)' != 'true' and '$(DotnetBuildFromSource)' == 'true' and '$(IsPackable)' == 'true' and !$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', '$(NetCoreAppCurrent)')) and '$(TargetFrameworkIdentifier)' != '.NETStandard' and '$(TargetFrameworkVersion)' != 'v2.0'">
-    <IncludeBuildOutput>false</IncludeBuildOutput>
-    <SuppressDependenciesWhenPacking>true</SuppressDependenciesWhenPacking>
-  </PropertyGroup>
-
   <!-- If a project is downlevel from net5.0 but uses the platform support attributes, then we include the
        System.Runtime.Versioning*Platform* annotation attribute classes in the project as internal.
 
@@ -292,14 +281,6 @@
     </ItemGroup>
   </Target>
 
-  <!-- TODO: Remove this after https://github.com/NuGet/NuGet.Client/pull/3980 is merged.-->
-  <Target Name="RemoveXmlFilesFromBuildOutput" BeforeTargets="GenerateNuspec">
-    <PropertyGroup>
-      <AllowedOutputExtensionsInPackageBuildOutputFolder>.dll;.exe;.winmd;.json;.pri;</AllowedOutputExtensionsInPackageBuildOutputFolder> 
-      <AllowedOutputExtensionsInSymbolsPackageBuildOutputFolder>.pdb;.mdb;$(AllowedOutputExtensionsInPackageBuildOutputFolder)</AllowedOutputExtensionsInSymbolsPackageBuildOutputFolder>
-    </PropertyGroup>
-  </Target>
-
   <PropertyGroup>
     <BeforePack>IncludeAnalyzersInPackage;$(BeforePack)</BeforePack>
   </PropertyGroup>
diff --git a/src/libraries/Microsoft.Extensions.DependencyModel/src/CompatibilitySuppressions.xml b/src/libraries/Microsoft.Extensions.DependencyModel/src/CompatibilitySuppressions.xml
new file mode 100644
index 0000000000000..d088c3cafe554
--- /dev/null
+++ b/src/libraries/Microsoft.Extensions.DependencyModel/src/CompatibilitySuppressions.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0"?>
+<Suppressions xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
+  <!-- NETFramework,Version=v4.5.1, .NETStandard,Version=v1.3 and NETStandard,Version=v1.6 are out of support and dropped from the package. -->    
+  <Suppression>
+    <DiagnosticId>PKV006</DiagnosticId>
+    <Target>.NETFramework,Version=v4.5.1</Target>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>PKV006</DiagnosticId>
+    <Target>.NETStandard,Version=v1.3</Target>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>PKV006</DiagnosticId>
+    <Target>.NETStandard,Version=v1.6</Target>
+  </Suppression>
+</Suppressions>
\ No newline at end of file
diff --git a/src/libraries/Microsoft.Extensions.DependencyModel/src/Microsoft.Extensions.DependencyModel.csproj b/src/libraries/Microsoft.Extensions.DependencyModel/src/Microsoft.Extensions.DependencyModel.csproj
index b7ccc5b0db1ae..81b60b7135205 100644
--- a/src/libraries/Microsoft.Extensions.DependencyModel/src/Microsoft.Extensions.DependencyModel.csproj
+++ b/src/libraries/Microsoft.Extensions.DependencyModel/src/Microsoft.Extensions.DependencyModel.csproj
@@ -2,8 +2,6 @@
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;net461</TargetFrameworks>
     <EnableDefaultItems>true</EnableDefaultItems>
-    <!-- PKV006 is due to intentional removal of .NETFramework,Version=v4.5.1, .NETStandard,Version=v1.3 and NETStandard,Version=v1.6 target frameworks from the package as they are no longer supported. -->
-    <NoWarn>$(NoWarn);PKV006</NoWarn>
     <PackageDescription>Abstractions for reading `.deps` files.
 
 Commonly Used Types:
diff --git a/src/libraries/Microsoft.Extensions.HostFactoryResolver/src/Microsoft.Extensions.HostFactoryResolver.Sources.csproj b/src/libraries/Microsoft.Extensions.HostFactoryResolver/src/Microsoft.Extensions.HostFactoryResolver.Sources.csproj
index 43edfb9491a63..dff90383f96cb 100644
--- a/src/libraries/Microsoft.Extensions.HostFactoryResolver/src/Microsoft.Extensions.HostFactoryResolver.Sources.csproj
+++ b/src/libraries/Microsoft.Extensions.HostFactoryResolver/src/Microsoft.Extensions.HostFactoryResolver.Sources.csproj
@@ -10,7 +10,7 @@
     <!-- This is a source package which includes all .cs files by default. -->
     <IsSourcePackage>true</IsSourcePackage>
     <!-- This is non-shipping package. -->
-    <EnablePackageBaselineValidation>false</EnablePackageBaselineValidation>
+    <DisablePackageBaselineValidation>true</DisablePackageBaselineValidation>
     <PackageDescription>Internal package for sharing Microsoft.Extensions.Hosting.HostFactoryResolver type.</PackageDescription>
   </PropertyGroup>
 </Project>
diff --git a/src/libraries/System.IO.Hashing/src/System.IO.Hashing.csproj b/src/libraries/System.IO.Hashing/src/System.IO.Hashing.csproj
index 3ef2ef309ec11..acfa86bb798d8 100644
--- a/src/libraries/System.IO.Hashing/src/System.IO.Hashing.csproj
+++ b/src/libraries/System.IO.Hashing/src/System.IO.Hashing.csproj
@@ -5,7 +5,7 @@
     <TargetFrameworks>$(NetCoreAppCurrent);netstandard2.0;net461</TargetFrameworks>
     <IsPackable>true</IsPackable>
     <!-- TODO: Remove when the package ships with .NET 6. -->
-    <EnablePackageBaselineValidation>false</EnablePackageBaselineValidation>
+    <DisablePackageBaselineValidation>true</DisablePackageBaselineValidation>
     <PackageDescription>Provides non-cryptographic hash algorithms, such as CRC-32.
 
 Commonly Used Types:
diff --git a/src/libraries/System.Windows.Extensions/pkg/System.Windows.Extensions.pkgproj b/src/libraries/System.Windows.Extensions/pkg/System.Windows.Extensions.pkgproj
deleted file mode 100644
index 240cfdfab1b89..0000000000000
--- a/src/libraries/System.Windows.Extensions/pkg/System.Windows.Extensions.pkgproj
+++ /dev/null
@@ -1,12 +0,0 @@
-<Project DefaultTargets="Build">
-  <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props))" />
-  <ItemGroup>
-    <ProjectReference Include="..\ref\System.Windows.Extensions.csproj">
-      <SupportedFramework>netcoreapp3.1</SupportedFramework>
-    </ProjectReference>
-    <ProjectReference Include="..\src\System.Windows.Extensions.csproj" />
-    <!-- Exclude TFMs that aren't supported by the package anymore from validation. -->
-    <ExcludeHarvestedSupportedFramework Include="netcoreapp3.0" />
-  </ItemGroup>
-  <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.targets))" />
-</Project>
\ No newline at end of file
diff --git a/src/libraries/System.Windows.Extensions/src/CompatibilitySuppressions.xml b/src/libraries/System.Windows.Extensions/src/CompatibilitySuppressions.xml
new file mode 100644
index 0000000000000..c6379c3e4ac3c
--- /dev/null
+++ b/src/libraries/System.Windows.Extensions/src/CompatibilitySuppressions.xml
@@ -0,0 +1,12 @@
+<?xml version="1.0"?>
+<Suppressions xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
+  <!-- .NETCoreapp,Version=v3.0 is out of support and dropped from the package. -->
+  <Suppression>
+    <DiagnosticId>PKV006</DiagnosticId>
+    <Target>.NETCoreapp,Version=v3.0</Target>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>PKV007</DiagnosticId>
+    <Target>.NETCoreapp,Version=v3.0-win</Target>
+  </Suppression>
+</Suppressions>
\ No newline at end of file
diff --git a/src/libraries/System.Windows.Extensions/src/System.Windows.Extensions.csproj b/src/libraries/System.Windows.Extensions/src/System.Windows.Extensions.csproj
index e995c093bb7c9..276e9865a70a0 100644
--- a/src/libraries/System.Windows.Extensions/src/System.Windows.Extensions.csproj
+++ b/src/libraries/System.Windows.Extensions/src/System.Windows.Extensions.csproj
@@ -2,6 +2,7 @@
   <PropertyGroup>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <TargetFrameworks>$(NetCoreAppCurrent)-windows;$(NetCoreAppCurrent);netcoreapp3.1-windows;netcoreapp3.1</TargetFrameworks>
+    <IsPackable>true</IsPackable>
   </PropertyGroup>
   <!-- DesignTimeBuild requires all the TargetFramework Derived Properties to not be present in the first property group. -->
   <PropertyGroup Condition="'$(TargetsWindows)' != 'true'">