There's a bunch of things brewing like Parallel Extensions and .NET 4.0. Personally I think Microsoft needs to freagin slow down. There's all these bugs and problems in the stuff they already released... they have douzens and douzens of technologies that have potential, but most aren't quite there yet or haven't had time to mature, from ASP.NET AJAX to half of the stuff that came out in SP1.
Just continue baking those, they have potential, but they need to achieve it, and its not going to happen if they spread themselves so thin...