Vittorio has a sneak peek of the upcoming identity framework up on his blog.
Like many others I wrote my own STS (or tried to) – and I am happy that in the future this tedious work will be the job of some base class to derive from.
I have also seen Vittorio’s talk at TechEd and have seen some more good upcoming stuff. In the meanwhile you can still download my InfoCard ASP.NET control to make things easier ;)