Chris Columbus, director of the original Harry Potter films, hails the upcoming HBO reboot as a "spectacular idea," believing its episodic format will allow for a more faithful adaptation of the books. In an interview with People, Columbus explained the constraints of the films' shorter runtimes, noting that while they "tried to get as much of the book in as possible," limitations were inevitable.

"I think it's a spectacular idea because there’s a certain restriction when you’re making a film," Columbus stated. He highlighted the significant difference between a two-hour-plus film and the potential of multiple episodes per book: "The fact that they have the leisure of [multiple] episodes for each book, I think that's fantastic. You can get all the stuff in the series that we didn't have an opportunity to do... All these great scenes that we just couldn't put in the films."

Announced in April 2023, the HBO series promises a "faithful adaptation" with a more "in-depth" narrative than the films could achieve. Succession producers Francesca Gardiner and Mark Mylod (who also worked on Game of Thrones) are attached to direct and write.

Casting is currently underway for the lead roles of Harry, Ron, and Hermione. Regarding the Dumbledore role, Gary Oldman, who played Sirius Black in the original films, humorously suggested his age might now be suitable for the Hogwarts headmaster. Reports indicate that Mark Rylance is a top contender for the part, maintaining the franchise's tradition of casting British actors. This aligns with J.K. Rowling's reported "fairly involved" participation in the casting process.

Production is expected to commence in Spring 2025, with HBO aiming for a 2026 release.