PDC is coming

Uncloaking after a long absence, here's some of what is new and exciting for the next release of WCF and WF:  everything can be done in XAML. 

https://blogs.windowsclient.net/rob_relyea/archive/2008/09/30/pdc08-xaml-talk.aspx

https://channel9.msdn.com/pdc2008/TL36/