I was just looking at the TSS Symposium schedule. I'm up twice on Thursday, May 6th: HiveMind from 11:30 to 12:45, and Creating Tapestry Components from 3:30 to 5:00.
That leaves the question of which other sessions to attend! It will be a chance to learn more about AOP, and I want to see Gavin King's presentation on Mobile Data. It will also be a chance to learn a bit more about Porlets OR JBoss Cache OR J2EE without EJB (all scheduled against each other, alas).
The dinner keynote by JBoss, on "Professional Open Source" will be interesting. Will they be able to come up with a useful definition of this term?
I'm also interested in the Macromedia presentation on rich clients. At some point, (two years? five?) HTML applications will be marginalized, and some form of rich client within the web browser will take over. You won't do so much HTML, but you'll still need HiveMind to implement the server side of your application.