http://www.microsoft.com/downloads/details.aspx?FamilyId=333325FD-AE52-4E35-B531-508D977D32A6&displaylang=en
Live and very available.
One of the biggest benefits I see is the WorkflowHostService class
– a class that provides the glue between the WF world and the WCF world….very nice!
Enjoy!