Yep, copy the libraries and you're done. This wasn't necessary in Java 5 versions prior to update 7, where Sun was "kind" enough to introduce an incompatible change in class QName.
This change can be overriden - see our Wiki for details. The procedure there applies for beta 2, too.
Thanks for this great anwser!
It would be a good Idea to add this link to the Documentation for BPEL beta2!