Beta2 had a new and noteworthy: http://docs.jboss.org/jbosside/jboss-as/NewAndNoteworthy/jbosside2.0.0.beta2.html
Specifically, I believe, the ejb project tutorial / demo demonstrates some debugging.
To summarize, though, changing a .java file will automatically hot-code replace. Changing jsp's will not.
This is until we finish new packaging schemes that will allow you to designate your project's build folder to be a folder watched by jboss for changes.
But in the meantime i could use exploded deployment?
Is there som changes to that approach with JBossIDE 2.0 than earlier versions?