I just got forwarded this Channel 9 video posted a couple of weeks ago:

http://channel9.msdn.com/shows/This+Week+On+Channel+9/This-Week-on-C9-VS-2010-Beta-1-Windows-API-Code-Pack--a-WPF-Jukebox/

Dan and Brian talk about several new VS 2010 Beta 1 features including the Extension Manager, PLKs and the Integrated and Isolated Shells, and other new features and changes in the product.

This blog gets a shout out in the video :)