diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 346fc7efac5..d93afa23313 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -1,67 +1,67 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Dependencies>
   <ProductDependencies>
-    <Dependency Name="Microsoft.Private.Winforms" Version="4.8.0-preview9.19417.1">
+    <Dependency Name="Microsoft.Private.Winforms" Version="4.8.0-preview8.19380.4">
       <Uri>https://github.com/dotnet/winforms</Uri>
-      <Sha>dd6650900f5af7283c6af6ec85de4d8d51f28961</Sha>
+      <Sha>f8c3968d5cc0602e4f6e3343d334d585da468fb3</Sha>
     </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>
-    <Dependency Name="Microsoft.Win32.Registry" Version="4.6.0-preview9.19409.17" CoherentParentDependency="Microsoft.NETCore.App">
+    <Dependency Name="Microsoft.Win32.Registry" Version="4.6.0-preview8.19378.8" CoherentParentDependency="Microsoft.NETCore.App">
       <Uri>https://github.com/dotnet/corefx</Uri>
-      <Sha>b82d2bc44424c8a99a1f0fc13202bdfd43e6f9f5</Sha>
+      <Sha>80f411d58df8338ccd9430900b541a037a9cb383</Sha>
     </Dependency>
-    <Dependency Name="System.CodeDom" Version="4.6.0-preview9.19409.17" CoherentParentDependency="Microsoft.NETCore.App">
+    <Dependency Name="System.CodeDom" Version="4.6.0-preview8.19378.8" CoherentParentDependency="Microsoft.NETCore.App">
       <Uri>https://github.com/dotnet/corefx</Uri>
-      <Sha>b82d2bc44424c8a99a1f0fc13202bdfd43e6f9f5</Sha>
+      <Sha>80f411d58df8338ccd9430900b541a037a9cb383</Sha>
     </Dependency>
-    <Dependency Name="System.Configuration.ConfigurationManager" Version="4.6.0-preview9.19409.17" CoherentParentDependency="Microsoft.NETCore.App">
+    <Dependency Name="System.Configuration.ConfigurationManager" Version="4.6.0-preview8.19378.8" CoherentParentDependency="Microsoft.NETCore.App">
       <Uri>https://github.com/dotnet/corefx</Uri>
-      <Sha>b82d2bc44424c8a99a1f0fc13202bdfd43e6f9f5</Sha>
+      <Sha>80f411d58df8338ccd9430900b541a037a9cb383</Sha>
     </Dependency>
-    <Dependency Name="System.Diagnostics.EventLog" Version="4.6.0-preview9.19409.17" CoherentParentDependency="Microsoft.NETCore.App">
+    <Dependency Name="System.Diagnostics.EventLog" Version="4.6.0-preview8.19378.8" CoherentParentDependency="Microsoft.NETCore.App">
       <Uri>https://github.com/dotnet/corefx</Uri>
-      <Sha>b82d2bc44424c8a99a1f0fc13202bdfd43e6f9f5</Sha>
+      <Sha>80f411d58df8338ccd9430900b541a037a9cb383</Sha>
     </Dependency>
-    <Dependency Name="System.DirectoryServices" Version="4.6.0-preview9.19409.17" CoherentParentDependency="Microsoft.NETCore.App">
+    <Dependency Name="System.DirectoryServices" Version="4.6.0-preview8.19378.8" CoherentParentDependency="Microsoft.NETCore.App">
       <Uri>https://github.com/dotnet/corefx</Uri>
-      <Sha>b82d2bc44424c8a99a1f0fc13202bdfd43e6f9f5</Sha>
+      <Sha>80f411d58df8338ccd9430900b541a037a9cb383</Sha>
     </Dependency>
-    <Dependency Name="System.Drawing.Common" Version="4.6.0-preview9.19409.17" CoherentParentDependency="Microsoft.NETCore.App">
+    <Dependency Name="System.Drawing.Common" Version="4.6.0-preview8.19378.8" CoherentParentDependency="Microsoft.NETCore.App">
       <Uri>https://github.com/dotnet/corefx</Uri>
-      <Sha>b82d2bc44424c8a99a1f0fc13202bdfd43e6f9f5</Sha>
+      <Sha>80f411d58df8338ccd9430900b541a037a9cb383</Sha>
     </Dependency>
-    <Dependency Name="System.Reflection.Emit" Version="4.6.0-preview9.19409.17" CoherentParentDependency="Microsoft.NETCore.App">
+    <Dependency Name="System.Reflection.Emit" Version="4.6.0-preview8.19378.8" CoherentParentDependency="Microsoft.NETCore.App">
       <Uri>https://github.com/dotnet/corefx</Uri>
-      <Sha>b82d2bc44424c8a99a1f0fc13202bdfd43e6f9f5</Sha>
+      <Sha>80f411d58df8338ccd9430900b541a037a9cb383</Sha>
     </Dependency>
-    <Dependency Name="System.Reflection.MetadataLoadContext" Version="4.6.0-preview9.19409.17" CoherentParentDependency="Microsoft.NETCore.App">
+    <Dependency Name="System.Reflection.MetadataLoadContext" Version="4.6.0-preview8.19378.8" CoherentParentDependency="Microsoft.NETCore.App">
       <Uri>https://github.com/dotnet/corefx</Uri>
-      <Sha>b82d2bc44424c8a99a1f0fc13202bdfd43e6f9f5</Sha>
+      <Sha>80f411d58df8338ccd9430900b541a037a9cb383</Sha>
     </Dependency>
-    <Dependency Name="System.Security.AccessControl" Version="4.6.0-preview9.19409.17" CoherentParentDependency="Microsoft.NETCore.App">
+    <Dependency Name="System.Security.AccessControl" Version="4.6.0-preview8.19378.8" CoherentParentDependency="Microsoft.NETCore.App">
       <Uri>https://github.com/dotnet/corefx</Uri>
-      <Sha>b82d2bc44424c8a99a1f0fc13202bdfd43e6f9f5</Sha>
+      <Sha>80f411d58df8338ccd9430900b541a037a9cb383</Sha>
     </Dependency>
-    <Dependency Name="System.Security.Cryptography.Xml" Version="4.6.0-preview9.19409.17" CoherentParentDependency="Microsoft.NETCore.App">
+    <Dependency Name="System.Security.Cryptography.Xml" Version="4.6.0-preview8.19378.8" CoherentParentDependency="Microsoft.NETCore.App">
       <Uri>https://github.com/dotnet/corefx</Uri>
-      <Sha>b82d2bc44424c8a99a1f0fc13202bdfd43e6f9f5</Sha>
+      <Sha>80f411d58df8338ccd9430900b541a037a9cb383</Sha>
     </Dependency>
-    <Dependency Name="System.Security.Permissions" Version="4.6.0-preview9.19409.17" CoherentParentDependency="Microsoft.NETCore.App">
+    <Dependency Name="System.Security.Permissions" Version="4.6.0-preview8.19378.8" CoherentParentDependency="Microsoft.NETCore.App">
       <Uri>https://github.com/dotnet/corefx</Uri>
-      <Sha>b82d2bc44424c8a99a1f0fc13202bdfd43e6f9f5</Sha>
+      <Sha>80f411d58df8338ccd9430900b541a037a9cb383</Sha>
     </Dependency>
-    <Dependency Name="System.Security.Principal.Windows" Version="4.6.0-preview9.19409.17" CoherentParentDependency="Microsoft.NETCore.App">
+    <Dependency Name="System.Security.Principal.Windows" Version="4.6.0-preview8.19378.8" CoherentParentDependency="Microsoft.NETCore.App">
       <Uri>https://github.com/dotnet/corefx</Uri>
-      <Sha>b82d2bc44424c8a99a1f0fc13202bdfd43e6f9f5</Sha>
+      <Sha>80f411d58df8338ccd9430900b541a037a9cb383</Sha>
     </Dependency>
-    <Dependency Name="System.Windows.Extensions" Version="4.6.0-preview9.19409.17" CoherentParentDependency="Microsoft.NETCore.App">
+    <Dependency Name="System.Windows.Extensions" Version="4.6.0-preview8.19378.8" CoherentParentDependency="Microsoft.NETCore.App">
       <Uri>https://github.com/dotnet/corefx</Uri>
-      <Sha>b82d2bc44424c8a99a1f0fc13202bdfd43e6f9f5</Sha>
+      <Sha>80f411d58df8338ccd9430900b541a037a9cb383</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NETCore.App" Version="3.0.0-preview9-19416-02" CoherentParentDependency="Microsoft.Private.Winforms">
+    <Dependency Name="Microsoft.NETCore.App" Version="3.0.0-preview8-28379-05" CoherentParentDependency="Microsoft.Private.Winforms">
       <Uri>https://github.com/dotnet/core-setup</Uri>
-      <Sha>66a9d076b6ce2cb1dc079e5cd351439c58278daf</Sha>
+      <Sha>d15a0adeb874801e7bfaa4fbbb306a2efa268497</Sha>
     </Dependency>
     <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="1.0.0-beta.19411.1">
       <Uri>https://github.com/dotnet/arcade</Uri>
@@ -71,29 +71,29 @@
       <Uri>https://github.com/dotnet/arcade</Uri>
       <Sha>a11024c8c22cc762011addafc30c653c938048f4</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NETCore.Platforms" Version="3.0.0-preview9.19409.17" CoherentParentDependency="Microsoft.NETCore.App">
+    <Dependency Name="Microsoft.NETCore.Platforms" Version="3.0.0-preview8.19378.8" CoherentParentDependency="Microsoft.NETCore.App">
       <Uri>https://github.com/dotnet/corefx</Uri>
-      <Sha>b82d2bc44424c8a99a1f0fc13202bdfd43e6f9f5</Sha>
+      <Sha>80f411d58df8338ccd9430900b541a037a9cb383</Sha>
     </Dependency>
     <Dependency Name="Microsoft.DotNet.Wpf.DncEng" Version="4.8.0-preview9.19416.7">
       <Uri>https://dev.azure.com/dnceng/internal/_git/dotnet-wpf-int</Uri>
       <Sha>9dbf98944d032f91760e92882c80859cbf45b847</Sha>
     </Dependency>
-    <Dependency Name="System.IO.Packaging" Version="4.6.0-preview9.19409.17" CoherentParentDependency="Microsoft.NETCore.App">
+    <Dependency Name="System.IO.Packaging" Version="4.6.0-preview8.19378.8" CoherentParentDependency="Microsoft.NETCore.App">
       <Uri>https://github.com/dotnet/corefx</Uri>
-      <Sha>b82d2bc44424c8a99a1f0fc13202bdfd43e6f9f5</Sha>
+      <Sha>80f411d58df8338ccd9430900b541a037a9cb383</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NETCore.Runtime.CoreCLR" Version="3.0.0-preview9.19409.2" CoherentParentDependency="Microsoft.NETCore.App">
+    <Dependency Name="Microsoft.NETCore.Runtime.CoreCLR" Version="3.0.0-preview8.19372.4" CoherentParentDependency="Microsoft.NETCore.App">
       <Uri>https://github.com/dotnet/coreclr</Uri>
-      <Sha>eeec95164a0b39ad3f98dfe04012675f30807cb1</Sha>
+      <Sha>c01a9a157d512343ef104bb2b1f97b356e708b11</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NETCore.ILDAsm" Version="3.0.0-preview9.19409.2" CoherentParentDependency="Microsoft.NETCore.Runtime.CoreCLR">
+    <Dependency Name="Microsoft.NETCore.ILDAsm" Version="3.0.0-preview8.19372.4" CoherentParentDependency="Microsoft.NETCore.Runtime.CoreCLR">
       <Uri>https://github.com/dotnet/coreclr</Uri>
-      <Sha>eeec95164a0b39ad3f98dfe04012675f30807cb1</Sha>
+      <Sha>c01a9a157d512343ef104bb2b1f97b356e708b11</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NETCore.ILAsm" Version="3.0.0-preview9.19409.2" CoherentParentDependency="Microsoft.NETCore.Runtime.CoreCLR">
+    <Dependency Name="Microsoft.NETCore.ILAsm" Version="3.0.0-preview8.19372.4" CoherentParentDependency="Microsoft.NETCore.Runtime.CoreCLR">
       <Uri>https://github.com/dotnet/coreclr</Uri>
-      <Sha>eeec95164a0b39ad3f98dfe04012675f30807cb1</Sha>
+      <Sha>c01a9a157d512343ef104bb2b1f97b356e708b11</Sha>
     </Dependency>
     <Dependency Name="Microsoft.DotNet.Helix.Sdk" Version="2.0.0-beta.19411.1">
       <Uri>https://github.com/dotnet/arcade</Uri>
diff --git a/eng/Versions.props b/eng/Versions.props
index 9a27b0a9063..7edac9b1f71 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -4,39 +4,39 @@
     <VersionPrefix>4.8.0</VersionPrefix>
     <PreReleaseVersionLabel>preview9</PreReleaseVersionLabel>
     <AssemblyVersion>4.0.0.0</AssemblyVersion>
-    <SystemIOPackagingVersion>4.6.0-preview9.19409.17</SystemIOPackagingVersion>
+    <SystemIOPackagingVersion>4.6.0-preview8.19378.8</SystemIOPackagingVersion>
   </PropertyGroup>
   <!-- NuGet Package Versions -->
   <PropertyGroup>
-    <MicrosoftPrivateWinformsVersion>4.8.0-preview9.19417.1</MicrosoftPrivateWinformsVersion>
+    <MicrosoftPrivateWinformsVersion>4.8.0-preview8.19380.4</MicrosoftPrivateWinformsVersion>
   </PropertyGroup>
   <!-- Packages that come from https://github.com/dotnet/coreclr -->
   <PropertyGroup>
-    <MicrosoftNETCoreRuntimeCoreCLRVersion>3.0.0-preview9.19409.2</MicrosoftNETCoreRuntimeCoreCLRVersion>
-    <MicrosoftNETCoreILDAsmVersion>3.0.0-preview9.19409.2</MicrosoftNETCoreILDAsmVersion>
-    <MicrosoftNETCoreILAsmVersion>3.0.0-preview9.19409.2</MicrosoftNETCoreILAsmVersion>
+    <MicrosoftNETCoreRuntimeCoreCLRVersion>3.0.0-preview8.19372.4</MicrosoftNETCoreRuntimeCoreCLRVersion>
+    <MicrosoftNETCoreILDAsmVersion>3.0.0-preview8.19372.4</MicrosoftNETCoreILDAsmVersion>
+    <MicrosoftNETCoreILAsmVersion>3.0.0-preview8.19372.4</MicrosoftNETCoreILAsmVersion>
   </PropertyGroup>
   <!-- Packages that come from https://github.com/dotnet/core-setup -->
   <PropertyGroup>
-    <MicrosoftNETCoreAppVersion>3.0.0-preview9-19416-02</MicrosoftNETCoreAppVersion>
-    <MicrosoftNETCorePlatformsVersion>3.0.0-preview9.19409.17</MicrosoftNETCorePlatformsVersion>
-    <SystemDrawingCommonVersion>4.6.0-preview9.19409.17</SystemDrawingCommonVersion>
-    <SystemDirectoryServicesVersion>4.6.0-preview9.19409.17</SystemDirectoryServicesVersion>
-    <SystemReflectionMetadataLoadContextVersion>4.6.0-preview9.19409.17</SystemReflectionMetadataLoadContextVersion>
+    <MicrosoftNETCoreAppVersion>3.0.0-preview8-28379-05</MicrosoftNETCoreAppVersion>
+    <MicrosoftNETCorePlatformsVersion>3.0.0-preview8.19378.8</MicrosoftNETCorePlatformsVersion>
+    <SystemDrawingCommonVersion>4.6.0-preview8.19378.8</SystemDrawingCommonVersion>
+    <SystemDirectoryServicesVersion>4.6.0-preview8.19378.8</SystemDirectoryServicesVersion>
+    <SystemReflectionMetadataLoadContextVersion>4.6.0-preview8.19378.8</SystemReflectionMetadataLoadContextVersion>
   </PropertyGroup>
   <!-- Packages that come from https://github.com/dotnet/corefx via core-setup coherency parent dependency -->
   <PropertyGroup>
-    <MicrosoftWin32RegistryPackageVersion>4.6.0-preview9.19409.17</MicrosoftWin32RegistryPackageVersion>
-    <SystemCodeDomPackageVersion>4.6.0-preview9.19409.17</SystemCodeDomPackageVersion>
-    <SystemConfigurationConfigurationManagerPackageVersion>4.6.0-preview9.19409.17</SystemConfigurationConfigurationManagerPackageVersion>
-    <SystemDiagnosticsEventLogPackageVersion>4.6.0-preview9.19409.17</SystemDiagnosticsEventLogPackageVersion>
-    <SystemReflectionEmitPackageVersion>4.6.0-preview9.19409.17</SystemReflectionEmitPackageVersion>
+    <MicrosoftWin32RegistryPackageVersion>4.6.0-preview8.19378.8</MicrosoftWin32RegistryPackageVersion>
+    <SystemCodeDomPackageVersion>4.6.0-preview8.19378.8</SystemCodeDomPackageVersion>
+    <SystemConfigurationConfigurationManagerPackageVersion>4.6.0-preview8.19378.8</SystemConfigurationConfigurationManagerPackageVersion>
+    <SystemDiagnosticsEventLogPackageVersion>4.6.0-preview8.19378.8</SystemDiagnosticsEventLogPackageVersion>
+    <SystemReflectionEmitPackageVersion>4.6.0-preview8.19378.8</SystemReflectionEmitPackageVersion>
     <SystemReflectionTypeExtensionsPackageVersion>4.6.0-preview4.19176.11</SystemReflectionTypeExtensionsPackageVersion>
-    <SystemSecurityAccessControlPackageVersion>4.6.0-preview9.19409.17</SystemSecurityAccessControlPackageVersion>
-    <SystemSecurityCryptographyXmlPackageVersion>4.6.0-preview9.19409.17</SystemSecurityCryptographyXmlPackageVersion>
-    <SystemSecurityPermissionsPackageVersion>4.6.0-preview9.19409.17</SystemSecurityPermissionsPackageVersion>
-    <SystemSecurityPrincipalWindowsPackageVersion>4.6.0-preview9.19409.17</SystemSecurityPrincipalWindowsPackageVersion>
-    <SystemWindowsExtensionsPackageVersion>4.6.0-preview9.19409.17</SystemWindowsExtensionsPackageVersion>
+    <SystemSecurityAccessControlPackageVersion>4.6.0-preview8.19378.8</SystemSecurityAccessControlPackageVersion>
+    <SystemSecurityCryptographyXmlPackageVersion>4.6.0-preview8.19378.8</SystemSecurityCryptographyXmlPackageVersion>
+    <SystemSecurityPermissionsPackageVersion>4.6.0-preview8.19378.8</SystemSecurityPermissionsPackageVersion>
+    <SystemSecurityPrincipalWindowsPackageVersion>4.6.0-preview8.19378.8</SystemSecurityPrincipalWindowsPackageVersion>
+    <SystemWindowsExtensionsPackageVersion>4.6.0-preview8.19378.8</SystemWindowsExtensionsPackageVersion>
   </PropertyGroup>
   <!-- Packages that come from https://github.com/dotnet/arcade -->
   <PropertyGroup>