If you’re looking for info on pretty much any part of Windows 7, John Westworth from MS has got what you need over on his blog:
http://blogs.technet.com/john_westworth/archive/2009/06/08/windows-7-training-and-documentation.aspx
It includes posts on:
- Direct Access
- Branch Cache
- App Locker
- Bit Locker
and much more-go check it out 🙂
Cloudy with a chance of Licensing 
I’ve read on many blogs that the install process of win 7 would have been faster, but I didn’t really noticed any improvement on it; especially if compared to vista. It takes 35minutes on fast machines and 1hour in slow ones.