I don't know if this is the right forum for this message but:
What are the JMS clustering features that will actually be delivered in JBoss 4.0?
Are all of them going to be delivered on time?
This is very important because we are into moving to JBoss and the JMS clusterring is an issue.
We have placed clustering above federation support in the list of priorities for JMS/JBoss 4.0. So, after getting the full JMS 1.1 (including the application server support of course) support stabilized, I anticipate clustering will be next on the list.