Harry Potter HBO teaser

HBO unveiled the first official teaser for its Harry Potter series at an HBO Max launch event in London on March 25, 2026. (deadline.com) Season 1 has been titled Harry Potter and the Philosopher’s Stone and is scheduled to premiere on Christmas Day, December 25, 2026, on HBO with streaming available exclusively on Max where offered. (harrypotter.com) The trailer confirms the central trio—Dominic McLaughlin as Harry Potter, Arabella Stanton as Hermione Granger and Alastair Stout as Ron Weasley—and reveals key faculty casting including John Lithgow as Albus Dumbledore, Janet McTeer as Minerva McGonagall and Paapa Essiedu as Severus Snape. (deadline.com) HBO’s creative team lists Francesca Gardiner as showrunner and Mark Mylod as an executive producer/director, and cinematographer Adriano Goldman has said Season 1 will run eight episodes with Goldman serving as lead DP on multiple episodes. (collider.com) Warner Bros. Discovery CEO David Zaslav has publicly committed to a decade-long plan for the TV franchise, signaling a long-term HBO/Max strategy beyond the seven books, and the series’ rollout choices reflect that larger corporate plan. (collider.com) HBO executives say major antagonist casting remains incomplete—HBO boss Casey Bloys confirmed the role of Voldemort had not been finalized as of the trailer drop. (collider.com)