The official Comic-Con site has confirmed the schedule for the Breaking Dawn Part 1 discussion panel...
Thursday, July 21st
1:15-12:15 The Twilight Saga: Breaking Dawn Part 1— Summit Entertainment presents a sneak peek at the highly anticipated next chapter of The Twilight Saga. This is a must see for fans interested in the story's final chapters. You'll see exclusive footage from The Twilight Saga Breaking Dawn Part 1 and be treated to a filmmaker and cast Q&A session providing details on the first half of the epic two-part finale. Hall H
There has been no official confirmation that Rob will be on the panel but word is he will likely attend.