Warner Bros. Discovery is developing a new Harry Potter television series for HBO Max, a faithful adaptation of J.K. Rowling's books spanning ten years. Francesca Gardiner (Succession) will serve as showrunner, with Mark Mylod directing, and a team including Laura Neal (Killing Eve) contributing to the writing. Casting for the main child roles is underway, with Framestore potentially returning for visual effects. While J.K. Rowling is involved as executive producer, the series will feature a new cast, although some original film actors are considering roles. The series is slated for release in late 2026 or early 2027, at a budget comparable to HBO's House of the Dragon.