New Harry Potter Series on HBO: Trailer, Cast and Release Date

Fan theories about who would play Snape once the films ended ranged wildly, but none of them predicted the actor HBO actually chose. The streaming platform dropped the first real look at its Harry Potter reboot on March 25, 2026, and the casting choices—and one major omission—sparked plenty of conversation. Here’s what we actually know so far.

Premiere Date: December 25, 2026 ·
Platform: HBO Max ·
First Season Title: Harry Potter and the Philosopher’s Stone ·
Trailer Released: March 2026

The table below summarizes the essential production details confirmed by official sources.

Is there a new Harry Potter TV series coming out?

Yes. HBO confirmed in May 2025 that it is producing an original series based on J.K. Rowling’s Harry Potter books, with an official press release naming Dominic McLaughlin as Harry, Arabella Stanton as Hermione, and Alastair Stout as Ron (Warner Bros. Discovery official press release). The announcement came after what casting directors Lucy Bevan and Emily Brockmann described as an extraordinary search across tens of thousands of auditions.

Development details

The project was officially confirmed by Warner Bros. Discovery with Francesca Gardiner serving as showrunner and executive producer. The casting process began with a call for main roles in July 2025, with principal photography starting at Leavesden Studios in July 2025 (Wikipedia comprehensive series entry). By April 2025, the adult cast began taking shape.

Production team

Gardiner is joined by director Mark Mylod, who has directed episodes of Game of Thrones and Succession. In a joint statement, Gardiner and Mylod said the casting directors had led an extraordinary search, and they were delighted to announce they had found their Harry, Hermione, and Ron, praising the talent of these three unique actors and expressing eagerness for the world to witness their magic together onscreen (Warner Bros. Discovery official press release).

What is the next series of Harry Potter?

Season 1 adapts Harry Potter and the Philosopher’s Stone, the first of seven books, across eight episodes (Wikipedia comprehensive series entry). The series was originally slated for a 2027 premiere but was moved up to Christmas 2026 (TV Guide entertainment news).

Season 1 focus

The first photo from the series, released March 24, 2026, showed Dominic McLaughlin as Harry approaching what appeared to be a Quidditch pitch (Official HBO YouTube channel). The teaser trailer the following day featured glimpses of the Dursleys, the journey to Hogwarts, and the central trio in action.

Release timeline

The series will debut on HBO in the US and on HBO Max in international markets including Germany, Italy, UK and Ireland (Official Harry Potter website announcement). The premiere date of December 25, 2026 places the release squarely in the holiday viewing window.

Did J.K. Rowling approve of the new Harry Potter series?

J.K. Rowling is credited as executive producer on the series, and the official Official Harry Potter website site has published multiple updates including the first look and trailer announcements. The books themselves serve as the direct source material, with HBO positioning the adaptation as faithful to the original novels.

Rowling’s statements

Rowling has not issued a standalone statement about the casting or trailer, but her executive producer role and the official nature of announcements on her website suggest alignment with the project. The degree of her creative involvement beyond approval rights remains unclear from publicly available sources.

Involvement level

The executive producer credit confirms her financial and legal stake in the adaptation, but public statements have come primarily from HBO and Warner Bros. Discovery rather than from Rowling directly. Her involvement appears to be at the oversight level rather than day-to-day creative direction.

Is Cillian Murphy going to play Voldemort?

No. Cillian Murphy publicly denied these rumors, reportedly saying “avada kedavra” to the speculation when asked about reports that he had been cast as the dark lord Voldemort (Los Angeles Times entertainment coverage). The actual Voldemort casting has not been announced.

Casting rumors

Fan speculation about the Voldemort role has circulated since the project was announced, with various names proposed online. However, no official casting for Tom Riddle has been confirmed, and the trailer focused primarily on the young cast and the professors rather than dark wizards.

Confirmed cast

The confirmed adult cast includes Paapa Essiedu as Severus Snape (first reported by Los Angeles Times entertainment coverage), Janet McTeer as Minerva McGonagall, John Lithgow as Albus Dumbledore, and Nick Frost as Rubeus Hagrid. Additional announcements in September 2025 included Warwick Davis returning as Professor Flitwick (Official HBO YouTube channel announcement).

What is the cast of the new Harry Potter series?

The main trio was announced in May 2025 after a reported 40,000 auditions: Dominic McLaughlin as Harry Potter, Arabella Stanton as Hermione Granger, and Alastair Stout as Ron Weasley (Warner Bros. Discovery official press release). Additional Hogwarts student castings were announced via Official Harry Potter website student casting announcement in 2025.

Main roles

The adult ensemble includes John Lithgow (Albus Dumbledore), Janet McTeer (Minerva McGonagall), Nick Frost (Rubeus Hagrid), and Paapa Essiedu (Severus Snape). Supporting faculty roles include Sirine Saba as Professor Sprout, Anton Lesser as Garrick Ollivander, and Paul Whitehouse as Argus Filch (Official HBO YouTube cast reveal video).

Trailer appearances

The March 2026 trailer gave viewers their first real look at the young cast in motion. It showed the Dursleys, Molly Weasley, Garrick Ollivander, Draco Malfoy, and Pansy Parkinson, suggesting those roles are filled even if full announcements haven’t been made (Official Harry Potter website announcement). One minor discrepancy exists: one early trailer description mentioned Poppy Izzard as Snape, which appears to be an error since official sources confirm Paapa Essiedu in the role.

The trailer gives Potterheads plenty to discuss before December arrives. For viewers in the US, the choice between waiting for HBO and potentially subscribing to see it on Christmas Day is straightforward: if you want the full season immediately, HBO is where it lands. For international audiences, HBO Max remains the destination, though regional pricing and availability may vary. The real question is whether the adaptation’s extended format—one book per season across multiple years—delivers the depth fans have been hoping for since the films ended.

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The trailer introduces Dominic McLaughlin as Harry, Arabella Stanton as Hermione, Alastair Stout as Ron and Paapa Essiedu as Snape, with the full HBO cast guide offering deeper character insights.