I didn't post a big list of features with my announcement post an hour or so ago.  However, here is a pointer to the final list of TFS 2008 features I posted a couple of months ago.

http://blogs.msdn.com/bharry/archive/2007/08/08/final-tfs-2008-feature-list.aspx

Also, Jeff Beehler has produced a very nice indexed feature list that covers all of VSTS

http://blogs.msdn.com/jeffbe/archive/2007/11/19/visual-studio-team-system-2008-ships.aspx

Brian