That’s a WOW thing that I just started using since I joined ALM Rangers Team. Tfs preview (http://tfspreview.com/) is a perfect way of using the newest TFS. It’s fast, it’s simple, it works.
You can subscribe to this website to receice a invitation code, when MS decide to open to more users (remember, it’s a preview yet).
It’s really amazing. Worths a look.