The latest version of the Java Web Services Developer Pack (version 1.4) is now available and offers support for both the WS-I Basic Profile 1.1 and WS-I Attachments Profile 1.0. Support for the WS-I attachments profile now allows interoperable description and exchange of SOAP messages that include attachments based on the WSDL 1.1 MIME binding and the SOAP Messages With Attachments...
It looks like I've already been scooped by Eduardo but just in case you missed that, the first early draft of JAX-RPC 2.0 is now available for review. It addresses the following goals and requirements:
Integration with JAXB
Addition of client side asynchrony
Improved support for document and message centric usage
Improvements to the handler framework
Default alignment with the WS-I Basic Profile...