Thanks Kamadake for mailing me what Bunnios told me late last night.
According to a source at Microsoft, there will be a new build of Windows .NET Server released (across the board) this will be a pre RC (Release Candidate) and will have the build number 3635. The release to beta testers is expected in a few days.
This will be the second release in the 5.2 kernel series, not much information was made available but Microsoft incremented the version from 5.1 to 5.2 with the last release rendering many applications useless.
View: Windowsbeta.de are also running this (in German)