HBO and Max are developing an expansive television adaptation of the Harry Potter book series, which is scheduled to debut on December 25, 2026. This ambitious project intends to spend an entire decade filming seven seasons, allowing each individual novel the screen time necessary for a highly faithful recreation of the original text. The production features a brand-new cast of young actors and industry veterans, supported by an unprecedented budget and a creative team known for high-end prestige drama. By utilizing a long-form format, the show aims to include rich subplots and character details that were previously omitted from the feature films. The series will be filmed at the historic Warner Bros. Studios Leavesden, blending practical sets with modern visual effects to offer a fresh yet grounded perspective on the Wizarding World.