I am working on a .NET 1.1 application that I will have to port to 2.0 beta 2 as soon as possible. Besides from Visual Studio itself, I absolutely must have Vault and Resharper installed too. Both of these tools were not "compatible" (note the quotes - of course at least standalone apps can execute side-by-side using older versions of the .NET Framework, but the add-ins can't) with .NET 2.0 beta 2 until only a few days ago.

Then all of the sudden, both release a compatible product - Vault 3.1 is final (was in beta for quite some time) while Resharper 2.0 is in very Early Access Program (read: alpha) but looks really promising.