Breaking Dawn Panel at Comic Con...

July 21st, 11h15-12h15am ...

From Comic-Con's official site

Thursday, July 21st

11:15-12:15 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

Still no confirmation that Rob will be there, but very likely...

While there's been no official word of who will be on the panel, I'm told Robert Pattinson, Kristen Stewart, Taylor Lautner and director Bill Condon are set to be there

source: Comic-Con's official site and  E! Online via Robert Pattinson us