HBO’s Harry Potter Series: Trailer Breakdown, Cast, Release Date, and What’s New

Published March 25, 2026 20:41

(modified March 26, 2026 04:00)
Tim James

Tim James

Dominic McLaughlin as Harry Potter

The wizarding world is officially returning to the screen. HBO has unveiled the first trailer for its highly anticipated Harry Potter television reboot, offering fans a fresh, yet familiar, journey back to Hogwarts.

Here’s a complete, up-to-date look at everything revealed so far.

What the Trailer Reveals

The two-minute teaser retraces the earliest steps of Harry’s story, from life with the Dursleys to his arrival at Hogwarts.

Harry Potter and the Philosopher

We see the iconic cupboard under the stairs, where Harry lives before discovering his magical identity. Aunt Petunia is heard dismissing him as «nothing special,» just as his Hogwarts letter arrives, setting the tone for the transformation ahead.

The trailer then follows Hagrid guiding Harry through London toward King’s Cross, where the Hogwarts Express awaits. While Platform 9¾ itself remains mostly hidden, familiar visual cues are all there: Harry’s lightning scar, his round glasses, and a fleeting glimpse of the Weasley family.

Once at Hogwarts, the trailer opens up into a wider world. Key characters, including Snape, Dumbledore, McGonagall, Draco Malfoy, Ron and Hermione, make their first appearances. Even small but beloved details, like the Sorting Hat and wandmaker Ollivander, are featured.

Sharp-eyed fans will also notice glimpses of Quidditch players preparing for a snowy match, along with detailed sets such as common rooms and greenhouses.

Release Date and Long-Term Plan

Alastair Stout, Dominic McLaughlin and Arabella Stanton will play the main trio in the new series

The first season is scheduled to premiere on HBO Max during Christmas 2026.

This isn’t a one-off project. The studio is planning a decade-long production, with each season adapting one of J. K. Rowling’s seven books.

Filming is taking place at Warner Bros. Studios Leavesden, where even a temporary on-site school has been approved so young actors can balance filming with education.

Familiar… but Not Identical

Dominic McLaughlin as Harry Potter seen from behind in a long red cloak with "Potter 7" on the back
A new still shows Dominic McLaughlin as Harry in his Gryffindor quidditch cloak

At first glance, the reboot remains visually faithful to the original films—retaining many signature elements like Hogwarts uniforms, Dumbledore’s half-moon glasses, and Hagrid’s rugged look.

But there are notable differences:

  • The series uses the original title Harry Potter and the Philosopher’s Stone (instead of the U.S.-adapted «Sorcerer’s Stone»)
  • New scenes appear to expand the story, including Harry’s time at a non-magical school before Hogwarts
  • Hagrid escorting Harry via the London Underground is a fresh addition
  • Quidditch uniforms and equipment seem redesigned for a more modern feel

Overall, the tone suggests a closer, more detailed adaptation of the books, rather than a remake of the films.

Cast: A New Generation of Wizards

Arabella Stanton, Dominic McLaughlin, and Alastair Stout
Arabella Stanton, Dominic McLaughlin and Alastair Stout play Hermione, Harry and Ron

After more than 30,000 auditions, HBO has selected a largely fresh cast to lead the series:

  • Dominic McLaughlin as Harry Potter
  • Arabella Stanton as Hermione Granger
  • Alastair Stout as Ron Weasley

They’re joined by:

  • John Lithgow as Dumbledore
  • Janet McTeer as McGonagall
  • Paapa Essiedu as Snape
  • Nick Frost as Hagrid

Other young cast members include Lox Pratt (Draco Malfoy), Rory Wilmot (Neville Longbottom) and Amos Kitson (Dudley Dursley).

Notably, the role of Voldemort has not yet been cast.

Draco Malfoy will be played by Lox Pratt, who recently starred in Lord of the Flies
John Lithgow and Paapa Essiedu will play professors Dumbledore and Snape
Nick Frost in character with a long beard
Nick Frost plays Hagrid
Warwick Davis standing on a step climbing into a steam train carriage
Warwick Davis is reprising his role as Professor Filius Flitwick

Earlier this week, HBO boss Casey Bloys confirmed to Variety, external that they had not yet cast an actor for the role of Harry’s arch enemy Voldemort – portrayed on the big screen by Ralph Fiennes.

Pushed on rumours about Tilda Swinton, he replied: «As a rule, I would say any rumours – don’t [believe them]. I don’t even know who we’re casting.»

Rowling’s Role and the Controversy

JK Rowling pictured at the world premiere of Fantastic Beasts: The Secret of Dumbledore in London, 2022

J. K. Rowling is serving as an executive producer, with HBO describing the series as a «faithful adaptation» of her books.

However, the production has not been without controversy. Some cast members have faced criticism due to Rowling’s public views on gender identity. Several actors have openly distanced themselves from those views, while Rowling has stated she respects differing opinions and would not remove anyone from the project for disagreeing with her.

The debate has also led to heightened security measures during filming.

A Message from the Original Harry

Not that we know… unless he used his wizardry skills to sneak in unnoticed.

But he has written to the new Harry Potter.

The original star of the decade-long noughties movie franchise, now 36, revealed in November that he had sent a letter to McLaughlin, who then sent «a very sweet note back».

Emma Watson, Daniel Radcliffe and Rupert Grint as children soon after being cast in 2000
Emma Watson, Daniel Radcliffe and Rupert Grint played the original Hermione, Harry and Ron

Daniel Radcliffe, who portrayed Harry in the original film series, has already reached out to the new lead.

Radcliffe revealed he wrote a personal letter to Dominic McLaughlin, wishing him the best experience possible. Reflecting on his own time in the role, he expressed both nostalgia and excitement for the new generation stepping into the wizarding world.

McLaughlin’s predecessor – who was also 11 when he began work on the first Harry Potter movie – wished the youngster and his co-stars all the best for the production, saying: «I just want to hug them.»

He said: “I don’t want to be a specter in the life of these children but I just wanted to write to him to say, ‘I hope you have the best time, and an even better time than I did – I had a great time, but I hope you have an even better time’.

The Big Picture

HBO’s Harry Potter series is shaping up to be a long-form, book-faithful retelling with expanded storytelling and a completely new cast.

While the trailer leans heavily on nostalgia, it also hints at deeper world-building and fresh perspectives—suggesting this won’t simply be a remake, but a reimagining designed to unfold over the next decade.

If the first glimpse is anything to go by, Hogwarts is about to feel both comfortingly familiar—and entirely new.

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