My place gearing up it's support for it as my organisation supports schools. Some of those schools will need to move to it over the next year or so due the M$ licensing schemes their on. I'm off on technician training for Vista in October. There is much about Vista that is the same as XP and much that is not in a full windows Active Directory & Domain Controller set up.
The new server versionof Vista Server 2008 is currently in Beta testing
http://www.microsoft.com/windowsserver2008/default.mspx
So all the fun and games begin again. And most of us have only just got Server 2003 R2 bedded in well and humming!