FanExpo will be hosting Dallas Comic Con this coming May 16-18. It will be held at the Kay Bailey Hutchison Convention Center, AKA Dallas Convention Center. This is hoped to be a huge improvement over the unholy abortion that was last year's convention at the Irving Convention Center.
Notable guests currently scheduled include 7/9 members of the cast of Firefly (missing River and Zoe ATM), Stan Lee, Billy Shatner, Michael Rooker. And I'm sure Jason David Frank will show up at some point.