In keeping with its plans for accelerated production on Harry Potter , HBO has officially greenlighted a second season of the fantasy series. It is scheduled to begin filming this fall, ahead of the Christmas premiere of Season 1, titled Harry Potter and the Philosopher’s Stone. Jon Brown (HBO’s Succession ), who is a writer on the first season, has been elevated to co-showrunner for Season 2 alongside Season 1 showrunner Francesca Gardiner. The renewal comes as Season 1 is still filming, with production slated to wrap in a couple of weeks. It was fully expected — and so was its timing. RELATED: 2026 Premiere Dates For New & Returning Series On Broadcast, Streaming & Cable Watch on Deadline Casey Bloys, Chairman and CEO of HBO and HBO Max Content, revealed in Novembe r that writing on the second season already had started.…