Build on top of the popular Visual Studio 2008 Training Kit, ASP.NET 3.5 Extension was released a few days ago.

ASP.NET 3.5 Extension will be part of .NET Framework 3.5 SP1 and it covers the following technologies:

1. ASP.NET MVC (Model-View-Controller) – Think Java Struts
2. ASP.NET Dynamic Data – Think about Rails scaffolding ability and this could be the bullet train.
3. ASP.NET Control for Silverlight
4. ADO.NET Entity Framework
5. ADO.NET Data Services
6. and more ASP.NET AJAX stuffs

Download the Training Kit here and the SDK here.

You can also go here for the landing page with more info and links to forums.