Cameron Skinner has recently been on tour in the US giving talks about the new architecture tools in VS2010. He was touring with a developer evangelist Jennifer Marsman, who has followed up with a load of informative blog posts giving more detail on teh material that Cameron presented. A good entry point is http://blogs.msdn.com/jennifer/archive/2010/05/10/visualization-and-architecture-tools-in-vs2010-cameron-skinner-tour-summary.aspx.