HBO’s upcoming Harry Potter series is slowly assembling its Hogwarts faculty, and two more key roles are in the process of being finalized. Sources confirm that actress Janet McTeer ( The Old Man , Kaos ) is in negotiations to play Professor Minerva McGonagall,

There’s a new Albus Dumbledore coming to the small screen. John Lithgow has confirmed that he will portray the Hogwarts headmaster in HBO’s upcoming “Harry Potter” series, which will begin filming this summer.

John Lithgow will be picking up a wand and heading to Hogwarts. The Conclave actor, 79, has confirmed that he will be playing Headmaster Albus Dumbledore in the HBO's Harry Potter television series, which will reboot the iconic franchise.

They haven't even made it to set and the new Harry Potter television series is already shrouded in controversy.

With filming expected to begin this summer, the Harry Potter HBO TV show is close to finding the actors to play McGonagall and Snape.

The Battle of Hogwarts, which took place in the Harry Potter and the Deathly Hallows Part 2 film, was hugely skimmed through because of the film's limited duration. In terms of importance, this was a very important battle because it was this fight that finally marked the downfall of the main villain, Voldemort.

The Harry Potter HBO series is in negotiations with Janet McTeer to play Minerva McGonagall and Paap Essiedu is near a deal to play Severus Snape.

John Lithgow himself confirmed he is set to play Dumbledore in the upcoming “Harry Potter” series at HBO. In an interview with ScreenRant, Lithgow revealed he is indeed playing the headmaster of the Hogwarts School of Witchcraft and Wizardy in the hotly anticipated TV remake of J.K. Rowling’s books. For him, it represented a career-defining choice.

The new Harry Potter TV adaptation approaches a diverse and inclusive cast with Janet McTeer, Paapa Essiedu, and John Lithgow finalizing roles as McGonagall, Snape, and Dumbledore. This series aims to stay true to the characters' original ages from the books.

The Harry Potter series will debut on HBO in late 2026 or early 2027. While Paapa Essiedu in talks to play Professor Severus Snape, John Lithgow will be seen as Professor Albus Dumbledore.