The 'Harry Potter' TV series is aiming to debut in 2026 on Max. The date was revealed Friday morning by David Zaslav during Warner Bros. Discovery's fourth-quarter earnings call. He said, "We've not been shy about our excitement around Harry Potter. The last film was made more than a dozen years ago." Zaslav also revealed that he recently met with 'Harry Potter' creator J.K. Rowling in London.