Can't go to Mix07 but still want to hear the annoucements about (beep), (beep) and (beep)? Just head to the Mix07 Website for all the latest, up to the minute news.
http://www.visitmix.com/
I'd check this page also:
http://www.microsoft.com/presspass
Maybe This:
http://www.microsoft.com/silverlight/
And this:
http://www.silverlight.net/
Maybe also:
http://msdn.microsoft.com
Well, you get the idea 