The Release Candidate for JBossESB 4.0 is out and can be found here http://labs.jboss.com/portal/jbossesb/downloads. There are still a few rought edges that we're going to be working on between now and the final GA release later this month. One of those is the download size: it's bigger than it should be at the moment, but hopefully that won't discourage people from trying it out and giving us feedback.
Cheers,
Mark.
