Well it's taken a while but it looks like WinFX \ .NET 3.0 is on course to make the Vista package deadline as Microsoft said it would with its first release candidate being made available to download over the weekend. Sam Gentile has more on its development and release.
Just to remind you, .NET 3.0 is actually a collection of add-on libraries for .NET 2.0 dealign with UI, comms, business workflow and a few other things beside. The .NET 3.0 home page hasn't been updated yet but the site does give a good overview of what there is to play with if you do choose to download it. Enjoy.