You should ask in the JBossWS forum about WS-Eventing (but note that WS-Eventing as a specification is going to be significantly changed in the future).
As for the ESB, the underlying infrastructure is event-oriented. Your services register for the receive-message event. I view EDA as a way of layering on a SOA, or reasoning about a SOA, rather than in just terms of messages. The next major release of the ESB should provide more support for events at the higher level.
You may want to take a look at the sandbox too.
Thanks for the prompt reply Mark.
I suppose I was half-hoping that there was some configurable, abstracted bus support for web service-based pub sub, whether layered on the JBossWS WS-Eventing or not.
I envy you feeling comfortable about what EDA is ;). To me it just looks like mediated pub/sub messaging + CEP and is thus orthagonal to SOA, but opinions on this are pretty diverse.
Different opinions are good :-)