I’m sure you’ve heard the headline items from Mix.
I thought I’d put up a couple of links for the things that I found interesting.
If you’ve got the time, I’d recommend watching the Mix keynote video (warning it’s 2.5 hours). In this you’ll get an overview of Silverlight, the cross platform CLR, ruby in the browser, and some very, very cool demos (favs include debugging a silverlight app running on a browser from a windows box, installing Silverlight, and that 20 second chess match!)
I’d also check out
Personally, I'm looking forward to delving into Silverlight and silverlight streaming (4Gb for free!) in the near future, but I'm also liking in the new Live API's.