Spent the last couple of days upgrading .NET beta 1 to beta 2. Of course, there are some changes, as that's what betas are for.
Recompiling the projects written in beta 1 wasn't too hard; all the obsolete methods and classes are mentioned in the compiler output. The hardest one so far was a FrameworkInitialize() error, but Scott had already solved that one for me!
The SDC tasks for MSBuild don't work any more, so I'm going to take them out, and use a bunch of <Exec> calls instead.
[Update:] Renaming the Resources directory to app_globalresources enabled the <asp:Literal > control to work again.