I saw Marc Fleury speak at the latest Toronto Java Users Group meeting. Marc has great ideas about the next level of EJB that's produced in the Jboss product he brought into reality. Most of the room was trying to grasp the concepts while Marc kept pushing more ideas out at us, myself included.
I'm now busily working with the new Jboss 3.2 beta and learning about the 3.x interceptor concepts.
Read Marc's Blue paper "Why I Love EJB" for more information on Jboss concepts and the future of Jboss and EJB.