'Dunesday': December 18 Is Now the Bravest Date on the Calendar

There is a date on the calendar, and the date is December 18, and on that date two of the biggest movies of the decade are going to walk into the same theater and only one of them can win the weekend. Dune: Part Three — Denis Villeneuve's conclusion to his trilogy, adapting Dune Messiah, shot on IMAX film cameras, carrying the weight of two Best Picture nominations and the single most obsessive fanbase in science fiction — opens December 18, 2026. Avengers: Doomsday — the Russo brothers, Robert Downey Jr. as Doctor Doom, Chris Evans back as Steve Rogers, three universes headed for what Marvel calls a deadly collision — opens December 18, 2026. The fans have nicknamed it Dunesday, which is the first good thing to come out of this standoff.

Warner Bros. chose the date first and is not moving. That is the studio's position, stated plainly, and it is either admirable or delusional depending on which grosses you believe by Christmas morning. Consider the arsenals. Doomsday has already crossed $50 million in domestic pre-sales, 100 days out — a number that suggests the Marvel machine, pronounced dead roughly quarterly since 2019, has once again been misdiagnosed. Dune has the premium-format nuclear option: IMAX has locked the film into a three-week exclusive run through the holiday corridor, which leaves Doomsday — the biggest superhero movie of the year — shut out of IMAX entirely. Insider IMAX 70mm screenings begin December 14, four days before wide release, which means word of mouth will be in motion while Marvel is still buying billboards.

This is the part where I am supposed to tell you who wins, and I refuse, because the interesting thing is not the winner but the weapons. The IMAX lockout is the story: the premium screen has become the actual battlefield, the thing studios fight over the way they used to fight over release dates themselves. Doomsday will play on every screen in America except the best ones. Dune will play on the best ones and dare you to call that a disadvantage. After the summer The Odyssey had — July was IMAX's biggest month ever, with audiences hunting premium screens for months — Warner Bros. looked at the calendar and decided the format was the franchise.

The early signals favor the sandworms, for whatever early signals are worth. First screenings have sparked very positive buzz, and the word from the trades is that Villeneuve's shift to shooting on film gives the finale a more organic, gorgeous look than the digitally-shot first two. Doomsday, meanwhile, is doing the Marvel thing: an Endgame re-release with four new scenes (Steve and Peggy interrupted by Loki; the Hulk meeting Doom two miles underground; the TVA watching universes merge; Doom's mask being forged), a D23 special look, a countdown podcast on Disney+. One film is selling mystery. The other is selling inevitability. Both cost more than most countries' film industries.

Here is what I actually think: Dunesday is the healthiest thing to happen to the December corridor in years, because it is a real fight between two real movies instead of the usual arrangement where one tentpole gets the month and everything else hides. Somebody's $200-million-plus bet loses here. Somebody's does not. And for the first time in a long time, the audience gets to decide which kind of bigness it wants — the auteur's desert or the machine's multiverse — on the same night, on the same street. That is what a movie weekend is supposed to feel like. Grade: A — for the date. The films get graded when they open.