I mainly do these short announcements via my twitter account http://twitter.com/jmandia but I have been looking forward to digging into Prism v2 but held off until it was released (which is now :D).
I am glad to see guidance come out that covers WPF and Silverlight and it has been good to see how Prism v2 has changed over the 10 drops they did (and the fact that they asked for feedback on their thoughts on naming conventions and the ideas they were investigating).
The prism team were also very responsive to queries (even ones sent over the weekend. Cheers!).
Anyway this should warrant some of your time if you are interested in Silverlight and/or WPF.