AceShowbiz - Last May, Marvel Studios made a significant scheduling change for Avengers: Doomsday, shifting its release from the franchise’s traditional early May slot to a December 18, 2026 premiere. This move placed the film in direct competition with Denis Villeneuve’s Dune: Part Three. Both Marvel and Disney appear committed to this clash, with stars Robert Downey Jr. and Timothée Chalamet teasing the so-called "Dunesday" event.

A critical factor in this competition is the availability of premium large format (PLF) screens, particularly IMAX theaters. Both films initially planned IMAX releases, but new information reveals that IMAX has granted exclusive domestic access to Dune: Part Three for at least its opening weekend. This exclusivity means Avengers: Doomsday will not debut in IMAX theaters across the U.S., though select international locations will feature it in the premium format. Depending on the contractual details of the IMAX arrangement, Doomsday could face delays of several weeks before gaining access to the full slate of IMAX screens domestically.

The decision to restrict Avengers: Doomsday from IMAX theaters at launch represents an unprecedented challenge for the MCU franchise. Historically, IMAX screenings have been instrumental in driving box office records for the Avengers films. For example, Avengers: Endgame set an IMAX opening weekend record by grossing $91.5 million worldwide. This included $42.4 million in China and a $26.5 million domestic IMAX haul, the second-highest ever for the format. These IMAX earnings contributed to Endgame’s staggering $357.1 million domestic and $1.22 billion global opening records.

IMAX theaters accounted for 7.4% of Endgame’s domestic and 7.5% of its global opening weekend revenue. While these percentages may seem modest, the absolute values translate to tens of millions of dollars—an advantage Doomsday risks losing if it competes directly with Dune 3 without IMAX exclusivity. Furthermore, after the opening weekend, Doomsday would have to compete with Dune 3 for IMAX screen time as audience interest naturally declines over time.

The long-term financial impact of IMAX availability is even more pronounced. Avengers: Endgame generated $207 million in IMAX box office revenue within three weeks of release, breaking down into $62 million domestically and $145 million internationally (including $81.2 million from China). For comparison, Avengers: Infinity War earned $118 million in IMAX revenue over a similar timeframe, with $41.5 million during its worldwide IMAX opening. The franchise’s dominance in the IMAX format is a proven driver of its record-breaking box office results.

The clash between these two tentpole films highlights broader strategic decisions studios face regarding release windows, premium format access, and audience targeting. While competition can drive excitement, it can also fragment box office earnings, especially for blockbuster franchises reliant on event-style openings and IMAX revenue.

In summary, the battle between Avengers: Doomsday and Dune: Part Three is poised to be one of the most notable cinematic events of 2026, but the IMAX exclusivity granted to Dune 3 places Doomsday at a disadvantage. Unless Marvel Studios opts to reschedule, the MCU’s latest chapter risks losing a vital revenue stream and audience share during a critical release period.