The Microsoft BizTalk Adapter for Web Services Enhancement (WSE) v2.0 has just been released, claiming to support the next generation of Web Services promising security, reliability, transaction, and other abilities. WSE is the first step in series of web service enhancements from Microsoft.
The Microsoft BizTalk Adaptor for WSE 2.0 enables BizTalk to securely communicate through web services using the follow standards:
Also, in case you missed it, the documentation was also updated in January. Available from the BizTalk Server downloads section