According to our friends at PerezHilton.com, footage from Harry Potter and the Deathly Hallows - Part 2 was screened for an lucky audience at CinemaCon. Perez has all the details on what was shown. Read on, Potterheads, if you want to know what you missed out on. WARNING! MAJOR SPOILERS AHEAD FOR ANYONE WHO HASN'T READ OR DOESN'T KNOW HOW THE HARRY POTTER SERIES ENDS. Just thought you should know.