WSE 2.0 is the latest version of Microsoft's Web Services Enhancements. It's our implementation of some of the Web Services Architecture (WSA), and the 2.0 version includes support for the Oasis WS-Security standard. here's some information on new features in WSE 2.0 here.
Roanoke Valley .NET's October meeting will feature Mike Amundsen doing an Introduction to WSE 2.0.
This group meets in the training room at the Advance Auto Parts corporate offices at Crossroads Mall at 6:00 PM. They have a home page, and there's also an RVNUG mailing list.