HBO is reportedly in advanced negotiations with acclaimed actor John Lithgow, known for his role as Lord Farquaad in Shrek, to portray the iconic Hogwarts headmaster Albus Dumbledore in their upcoming Harry Potter series. While HBO remains tight-lipped, Variety reports that a deal is imminent. This follows earlier speculation in November that Mark Rylance was a frontrunner for the role.

"We understand the considerable interest surrounding this project and the resulting speculation," an HBO spokesperson stated. "As pre-production continues, casting confirmations will only be made upon finalizing contracts."

Lithgow's extensive acting credits include The World According to Garp, Terms of Endearment, Footloose, Dexter, and The Crown, showcasing his versatility and range.

While casting remains largely confidential, reports suggest significant progress. The search for the young leads – Harry, Ron, and Hermione – is ongoing, alongside the already confirmed casting of Paapa Essiedu as Severus Snape.

The series will prioritize British talent, mirroring the films. This aligns with the reported "significant involvement" of J.K. Rowling in the casting process.

Announced in April 2023, the Harry Potter adaptation promises a faithful, in-depth exploration of the novels, surpassing the constraints of the film adaptations. The series will be helmed by Francesca Gardiner and Mark Mylod, producers of Succession, with Mylod also contributing writing credits from his Game of Thrones experience.