At PDC this year, Microsoft announced a major release of the Windows Workflow Foundations (WF); WF4.0 WF4.0 promises better performance, scalability, control, visibility, and usability than its predecessor. Gone are code-asides and the dreaded code activities, replaced with 100% XAML markup and custom activities. MFST has seriously stepped up its tooling to make custom activities easier (including defining a custom WF syntax which gets “compiled” to XAML), an improved designer and debugging support....