The latest Windows SDK is now available for installation as an ISO download. The SDK release supports:

  1. Windows Server 2008 RC0
  2. Windows Vista SP1 Beta
  3. .NET Framework 3.5 Beta2.

and is compatible with the RTM release of Microsoft® Visual Studio 2005 SP1 (including Express Editions).

I did chuckle slightly when I went into the documentation and decided to filter the contents by "New in Windows Server" .... :-) I promise you - there is plenty of new stuff including IIS7, Framework 3.5 and MSMQ 4.0.