From Entertainment Weekly article:
Bill Condon has never been to Comic-Con, nor has he ever seen for himself what can happen when Kristen Stewart, Robert Pattinson, and Taylor Lautner get in a room with thousands of screaming fans. “It sounds insane! It sounds exciting,” he laughs. Comic-Con-bound Twihards can expect some never-before-seen clips form the highly anticipated penultimate chapter of The Twilight Saga—“I’m trying to figure out that now,” says Condon. “It’s a bit of a challenge ‘cause we don’t want to give away the wedding dress, and some of the other big action scenes have wolves that won't be ready in time”—in addition to a Q&A with the stars and the director.
Fans will no doubt have plenty of questions: Breaking Dawn delves into much darker (and weirder) territory than previous outings including Bella and Edward’s wedding followed by a night of passion (cue flying feathers!) that results in Bella’s pregnancy with a half-vampire baby—not to mention a fantastically gruesome birth. Says Condon, “What I’m really looking forward to is the experience of [screening the clips] with people who care so deeply about this.”