So J. Michael Straczynski discussed his future plans at WonderCon, and they definitely do sound interesting. As speculated, JMS' plans fit in better with companies where he'd have a great deal of control over his work, so his two biggest announcements are for two new Image titles - Justice and Ten Grand.
But he also IS going to do SOMEthing for DC Comics, and there are also still plans for Bablyon 5 comics!
The whole thing seemed to be about as good of news as you can get for JMS future plans, as everyone seems to agree that his best work is when its HIS baby (right? That is basically the consensus, no? No big Teen Titans Spotlight fans to argue, right?), and this is the way he is headed, so I was quite pleased.