Hopefully the above post provides a quick update on some of the new features and changes exposed with this week's ASP.NET MVC source update drop. 

You can download it here if you want to start using it immediately.  Alternatively, you can wait a few weeks for the official ASP.NET MVC Preview 3 drop - which will have some more features (and incorporate feedback people provide on this week's drop), deliver a more seamless installer, provide nice VS integration, and deliver up to date documentation.

For any questions/issues with this week's drop of ASP.NET MVC, make sure to also check out the ASP.NET MVC forum on www.asp.net.

Hope this helps,

Scott