Update branding to p6

Author: mmitche

eng/Versions.props

@@ -22,7 +22,7 @@
     <PreReleaseVersionLabel Condition="'$(StabilizePackageVersion)' != 'true'">preview</PreReleaseVersionLabel>
     <PreReleaseVersionLabel Condition="'$(StabilizePackageVersion)' == 'true' and $(VersionPrefix.EndsWith('00'))">rtm</PreReleaseVersionLabel>
     <PreReleaseVersionLabel Condition="'$(StabilizePackageVersion)' == 'true' and !$(VersionPrefix.EndsWith('00'))">servicing</PreReleaseVersionLabel>
-    <PreReleaseVersionIteration Condition="'$(StabilizePackageVersion)' != 'true'">5</PreReleaseVersionIteration>
+    <PreReleaseVersionIteration Condition="'$(StabilizePackageVersion)' != 'true'">6</PreReleaseVersionIteration>
     <!-- In source-build the version of the compiler must be same or newer than the version of the
          compiler API targeted by analyzer assemblies. This is mostly an issue on source-build as
          in that build mode analyzer assemblies always target the live compiler API. -->