Scholastic is doing a slow rollout of Kazu Kibuishi's new covers for the Harry Potter novels, and today at LeakyCon, a fan convention in Portland, Oregon, Arthur A. Levine Books unveiled the third one, The Prisoner of Azkaban. Scholastic will release a boxed set of all seven Harry Potter books on Aug. 27, just shy of the 15th anniversary of the debut of the first volume, Harry Potter and the Sorcerer's Stone.

Kibuishi, the creator of Copper and Amulet and the moving force behind the Flight anthologies, will be creating new covers for all seven of J.K. Rowling's Harry Potter books, each one revolving around a crucial moment in the story.