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.

The new series is one of the most ambitious projects to come to HBO and Max ever, and you can find all the details we have so far here. One of the most popular media franchises of all time is getting a new adaptation.

John Lithgow is in final talks to play Albus Dumbledore in HBO’s upcoming adaptation of J.K. Rowling’s “ Harry Potter ” books.