What to Expect From Dune: Part Three, the Other Movie Opening on December 18

Last week we broke down the Avengers: Doomsday trailer from D23, the loudest thing on the 2026 calendar. Here is the thing about that December 18 release date: Marvel does not have it to itself. Dune: Part Three opens the very same day, and for a lot of film fans it is the more anticipated of the two. Fans have already given the collision a name: Dunesday.

Two trailers in, with early IMAX 70mm tickets already sold, this is what we actually know about the end of Denis Villeneuve's trilogy.

The story: Dune Messiah, 17 years later

Dune: Part Three adapts Dune Messiah, Frank Herbert's short, strange, deeply cynical 1969 sequel. Where the first two films were about Paul Atreides gaining power, Messiah is about what that power costs. Villeneuve's version picks up 17 years after Part Two (the book's gap is 12), with Paul ruling as Emperor while a galaxy-wide holy war rages in his name and a conspiracy forms to bring him down.

That framing matters. Villeneuve has always read Dune as a warning about charismatic leaders rather than a hero's journey, and Messiah is the book where Herbert made that warning explicit. Expect less triumph and more reckoning: Paul haunted by the future he can see, Chani holding him to a promise the trailer says he broke, and their newborn twins at the center of everything.

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Who is back, and who is new

Almost everyone returns. Timothée Chalamet and Zendaya lead again, with Florence Pugh's Princess Irulan and Javier Bardem's true-believer Stilgar both stepping into much bigger roles. Rebecca Ferguson, Josh Brolin, Charlotte Rampling, and Léa Seydoux are all back as well.

• Robert Pattinson joins as Scytale, the film's antagonist. The trailers show him nearly unrecognizable with bleached blonde hair, plotting what Irulan bluntly translates as killing Paul.
• Anya Taylor-Joy returns as Alia, Paul's sister, glimpsed only in a vision in Part Two and now grown into one of the story's most volatile figures.
• Jason Momoa is back as Hayt. In Herbert's book, Hayt is a resurrected copy of Duncan Idaho, the fan favorite who died protecting Paul in the first film. How that lands on screen is one of the movie's biggest question marks.
• Paul and Chani's twins, Leto II and Ghanima, are played by Nakoa-Wolf Momoa (Jason Momoa's real life son) and Ida Brooke.

The format: shot on film, with brand new IMAX cameras

Villeneuve changed his whole photographic approach for the finale. He has said most of the movie was shot on 70mm film, with a big portion captured on IMAX film cameras, making this the first Dune shot partially on IMAX film. It is only the second production to use the new generation of lighter, quieter IMAX cameras, after Christopher Nolan's The Odyssey, and Villeneuve even had lensmaker Atlas craft a custom spherical IMAX lens specifically for the look of Arrakis.

There is a crew change worth knowing too: Linus Sandgren, who shot La La Land, takes over as cinematographer from Greig Fraser, who won an Oscar for the first film. Hans Zimmer returns to finish his trilogy score, and Villeneuve wrote the script with comics legend Brian K. Vaughan.

If The Odyssey taught the industry anything this summer, it is that premium formats are now a genuine event unto themselves. IMAX 70mm tickets for Part Three went on sale back in April, eight months early, and the best screens sold out fast. If you want to see this the way it was shot, plan ahead now.

Dunesday: the biggest release date showdown since Barbenheimer

December 18 now holds both Dune: Part Three and Avengers: Doomsday, the first Avengers film in seven years. The last time two titans shared a date like this, Barbenheimer turned a scheduling accident into a cultural moment, and both films won.

There is a real case the same thing happens here. The audiences overlap less than you would think, and the formats barely compete: Dune will own the IMAX and 70mm screens while Doomsday blankets everything else. Dune: Part Two pulled in over $700 million worldwide and $276 million domestically in 2024, so this is not a David and Goliath story. It is two franchises at full strength, and one very expensive weekend for the rest of us.

The real question: can it stick the landing?

Trilogy closers are where rankings get decided. Return of the King elevated everything before it. Plenty of other third chapters did the opposite. Dune Messiah is a riskier text than either previous book, an anti-climax on purpose, and whether general audiences embrace that is the most interesting open question of the movie year.

This is exactly what ranking head to head is for. Before December, build your sci-fi list on Shortlist and settle where the first two Dune films sit against the genre's giants. If you rank by franchise, our movie tier list guide shows the fastest way to set one up, and Marvel fans can stack the other side of Dunesday on our MCU ranking page. Come December 19, we will all find out whose list gets rewritten.

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