I'll be attending Confluence July 25-27, 2008. I expect I'll be giving my Fortifications 101 talk, which is part of my "Warfare for Writers" project. That'll be on Sunday. I'm also scheduled for three panel discussions.
And I'll be at Context September 26-28. I'm scheduled to give my World-Building Workshop (Sunday, September 28th, 10am-1pm) for which there are still some seats remaining.
Looking ahead to 2009, I'm going to be the Saturday luncheon keynote speaker at the Pennwriters Conference, held at the Airport Marriott in Pittsburgh, May 15-17. I expect to have other duties as well, but it's far, far too early for those details.