All the news on HBO's streaming 'Harry Potter' TV series, including cast, release date, how to watch, development and whether J.K. Rowling will be involved.

John Lithgow is reportedly in talks to play Professor Albus Dumbledore in a new television series adaptation of ‘Harry Potter’

The premium cabler is in talks with John Lithgow to play Albus Dumbledore, the headmaster of the Hogwarts School of Witchcraft and Wizardry. News of Lithgow’s potential involvement follows THR ‘s reporting that British actor Paapa Essiedu ( I May Destroy You) is in discussions to play Professor Severus Snape. HBO declined to comment.