Unfortunately, I don't have much time to write something up right now, but I wanted to let you know that Orcas Beta 2 is available today. You can download it here: http://msdn2.microsoft.com/en-us/vstudio/default.aspx
You can also read more about it on Soma's blog here: http://blogs.msdn.com/somasegar/archive/2007/07/26/announcing-the-release-of-visual-studio-2008-beta-2-net-fx-3-5-beta-2-and-silverlight-1-0-rc.aspx
The short of it is this...
In the next few days I'll be publishing a post with the final Orcas feature set for TFS (did I mention it's basically done? :)). We're looking for your feedback. We've got a few bugs left to fix and we've got some more testing and release process to go and then we'll be shipping it. I think our public statement is that it will ship by the end of the year.
Enjoy!
Brian