Download migration documents from -

·         WF Migration Overview - Overview of the document collection and an initial starting place for the WF3 developer

·         WF Migration: Best Practices for WF3 Development - How to design WF3 artifacts so they are more easily migratable to WF4

·         WF Guidance: Rules - Discussion of how to bring rules-related investments forward into .NET 4

·         WF Guidance: State Machine - Discussion of WF4 control flow modeling in the absence of a StateMachine activity