Dune: Part Three — Everything We Know About the Trailer Debut, Cast, and December 2026 Release

Denis Villeneuve's Dune: Part Three is officially its own beast. The first trailer — unveiled at a global IMAX fan event on July 8, 2026 — showed a transformed Timothée Chalamet, a chilling debut for Robert Pattinson as the shapeshifting villain Scytale, and the jaw-dropping return of Jason Momoa as a clone of Duncan Idaho. Here's every verified detail you need to know.

The Global IMAX Trailer Event and Live Q&A

Warner Bros. held the Dune: Part Three IMAX Global Trailer Event on Wednesday, July 8, 2026, at AMC Lincoln Square in New York City, with simultaneous screenings in Los Angeles, Chicago, Dallas, Toronto, Montreal, London, Berlin, Mexico City, and Abu Dhabi . Attendees got an exclusive first look at the new trailer and special footage, followed by a live-streamed conversation with director Denis Villeneuve who took fan questions .

Timothée Chalamet made a surprise appearance at the Los Angeles event and teased that the film will be "a different movie" with "its own energy" . Variety reported that Villeneuve and Chalamet unveiled an "action-packed new trailer" marking the most comprehensive look yet at the final chapter .

Adaptation and Timeline

The film adapts Frank Herbert's "Dune Messiah" (1969) and is set roughly 12 years after Dune: Part Two — not 17, based on the source material. Paul has been Emperor for about 12 years by the time Messiah begins . Villeneuve has called it the epic conclusion to his sci-fi trilogy .

Full Cast Breakdown

Actor	Role	Notes
Timothée Chalamet	Paul Atreides / Emperor Muad'Dib	Returning lead
Zendaya	Chani	Returning
Rebecca Ferguson	Lady Jessica	Returning
Florence Pugh	Princess Irulan	Returning
Javier Bardem	Stilgar	Returning
Anya Taylor-Joy	Alia Atreides	Returning
Jason Momoa	Hayt / Ghola of Duncan Idaho	Duncan died in Dune (2021) but is resurrected by the Tleilaxu as a ghola — a biological clone with implanted memories
Robert Pattinson	Scytale	A Tleilaxu Face Dancer, a shapeshifter who can mimic others' appearances
Charlotte Rampling	Reverend Mother Mohiam	Returning
Isaach de Bankolé	Farok	A Fremen character

Release Date

December 18, 2026 in the United States and Canada .

Co-Writers

The screenplay was co-written by Denis Villeneuve and acclaimed comic book writer Brian K. Vaughan (known for Saga, Y: The Last Man). Jon Spaihts, who co-wrote the first two films, was not involved in the screenplay this time .

Box-Office Context and Marketing Campaign

Dune: Part Two was a major critical and commercial hit, grossing over $700 million worldwide and earning multiple Oscar nominations, which has fueled a significantly escalated marketing push for Part Three . The marketing blitz includes the global IMAX trailer event, a character poster rollout (March 2026), and an early teaser campaign . As for a potential clash with "Avengers: Doomsday," industry trades have reported a May 2027 release for the latter, meaning Dune: Part Three would have a several-month head start rather than a direct simultaneous opening . The December 2026 corridor does position Dune against other holiday-season heavyweights.