Just quickly wanted to post one thing that came up in David R. Williamson's excellent session on Testing with the Visual Studio 2008 toolset at TechEd.
He mentioned there would be a "May 2007 CTP" of Visual Studio 2008 which is from the Beta 2 codeline imminently, with Beta 2 following in late summer so depending on how eager you are to try out the tools look out for these! I'm sure Brian Harry will have the announcements with the feature list in when it becomes available.