EXCLUSIVE: As the Harry Potter series continues production, HBO is beginning to firm up its launch plans for the TV adaptation of J.K. Rowling’s fantasy books.

“We’ve been saying 2027,” Casey Bloys, Chairman and CEO of HBO and HBO Max Content, told Deadline during a wide-ranging interview. “I would say, to narrow it down to some extent, early 2027. And now you’re going to ask, does that mean January, February, March, April, that we’re not ready to say. I’ll say early 2027.”

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'Harry Potter' TV series

Bloys first addressed a potential premiere date for Harry Potter in a September 2024 interview with Deadline when he said, “late ’26-’27” before adding, “writers are just getting started so it’s too soon to talk about airdate.”

Over the past year, as the series was written, cast and started production, its launch date had been listed as 2027. The window has now been narrowed down.

Dominic McLaughlin was cast as Harry Potter, Alastair Stout as Ron Weasley and Arabella Stanton as Hermione Granger in the series, which has been filming in the UK since the summer. Its adult leads include Paapa Essiedu, John Lithgow and Janet McTeer.

Harry Potter is written and executive produced by Francesca Gardiner. Mark Mylod is executive producing and directing multiple episodes of the series, produced by HBO in association with Brontë Film and TV and Warner Bros Television. Also executive producing are Rowling, Neil Blair and Ruth Kenley-Letts of Brontë Film and TV, and David Heyman of Heyday Films. Hans Zimmer recently signed on as composer.