JBoss ESB 4.2 GA will include a number of new Webservice related components:

1. SOAPProcessor: Expose Webservice endpoints for non-Webservice based services (SOAP "onto the bus").

2. SOAPClient: Easily make invocations on Webservice endpoints not running on the ESB (SOAP "off the bus").

Also, take a look at the following flash demos around JBossESB and ActiveBPEL integration - Online demonstration of WS-BPEL support

Supported (Tested) WS Standards:

1. WS-Security

2. WS-Addressing

3. MTOM/XOP