Have you checked out Server 2008 R2 Beta yet? I downloaded it today and have been working on getting it installed. There are 2 things that I am interested in with this build and that is the new features for HyperV and the new features available for the Terminal Services or as MS now calls it Remote Desktop Services. It looks like they have tied some of the TS Stuff in with the new Windows 7 client OS so this will be cool to see where that goes as I have clients now using the TS gateway and the TS Remote Apps.
Also I am intrested in the Live Migration in hyperV as we are moving into this heavily with some of our customers should be interesting to see where this all goes for sure. Back to some more playing with the Public Beta I downloaded and will let you know what I think.
Til later just Roger