Yes, the one app hated by many but sadly the only one you must use in order to configure your schedule is finally available at http://www.cplan.com/javaone2008/schedulebuilder. I believe there is still time to register and have some discount applied on the registration fee, see you there!

PS: there are 15 sessions devoted/related to Groovy this year don't miss out the opportunity to hear Guillaume and Graeme talk on Thursday morning!