I don't think that 'support' should block anyone from using the extensions to adopt WCF, as any projects created using the extensions will continue to work with Orcas. The only difference is that Service references created using the extensions will be treated as normal folders that can no longer be updated...

If you generate a WCF VB proxy that contains a DataContract type using svcutil.exe , calling a method that returns the type will always incorrectly return an uninitialized type. This works correctly for C#. John Stallo, a peer of mine, spent some time investigating this issue. Here's the resolution...