Marvel Studios is giving Avengers: Doomsday a massive year-long marketing campaign, as the first trailer will be attached to the biggest movie of the holiday season. Ever since Robert Downey Jr. was announced as Doctor Doom for Avengers: Doomsday at San Diego Comic-Con in July 2024, the anticipation for the MCU's latest film has grown exponentially. The first tease came in March 2025, in the now-infamous five-hour chair video that revealed the cast for Doomsday.
Collider reports that the teaser trailer for the Avengers: Doomsday will be attached exclusively to screenings of Avatar: Fire and Ash on December 19, 2025. Notably, the outlet also says that this is subject to change, as Disney still has time to change course. Nevertheless, if the report is true, this means the trailer for Avengers: Doomsday will play for 364 days, almost a full year, before the movie opens in theaters on December 18, 2026.
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