MVVM toolkit has been released at CodePlex – haven’t tried it yet :( Here are some references brought by the toolkit’s documentation:
· Presentation Model by Martin Fowler, July 2004.
· Introduction to Model/View/ViewModel pattern for building WPF apps by John Gossman, October 2005.
· Separated Presentation by Martin Fowler, June 2006.
· WPF Patterns by Bryan Likes, September 2006.
· WPF patterns: MVC, MVP or MVVM or…? by the Orbifold, December 2006.
· Model-see, Model-do, and the Poo is Optional by Mike Hillberg, May 2008.
· PRISM: Patterns for Building Composite Applications with WPF by Glenn Block, September 2008.
· The ViewModel Pattern by David Hill, January 2009.
· WPF Apps with the Model-View-ViewModel Design Pattern by Josh Smith, February 2009.