I will be covering some of this material in a fortcoming New Zealand Team system Users group session later this year. In the meantime this session is well worth watching as an early 'heads-up' for what is coming in Visual Studio Team System 10 (aka Rosario).
Norman Guadagno, the Director of Product Management for Visual Studio Team System shares the key enhancements coming in the next version of Visual Studio, officially named Visual Studio 2010. In this video, you'll hear Norman discuss new features in Team Architect including new visual designers and UML support, new software quality features including historical debugging, how the Database Edition is being rolled rolled into the Team Developer edition and lots more.
Link > http://channel9.msdn.com/posts/Dan/Norman-Guadagno-Announcing-Visual-Studio-Team-System-2010/