The first trailer for Marvel's Avengers: Doomsday is rumored to debut in December, coinciding with the release of James Cameron's Avatar: Fire and Ash. According to Collider, multiple sources indicate that the initial footage of the MCU's next major team-up film will be attached to this latest Avatar installment.
Collider notes this schedule could change before Avatar: Fire and Ash premieres on December 19, 2025. The Avengers: Doomsday movie is set to open almost exactly one year later, on December 18, 2026. As of now, Disney has not responded to inquiries regarding this trailer release.
Filming for Avengers: Doomsday wrapped in September 2025. While plot details remain under wraps, the film is confirmed to unite the Avengers, Fantastic Four, and original X-Men together on the big screen for the first time.
Several actors known from earlier Marvel projects, including Brie Larson, Famke Janssen, Elizabeth Olsen, Charlie Cox, Andrew Garfield, Halle Berry, and Chris Evans, have either declined to confirm or have denied returning as their characters in this film.
Channing Tatum, reprising his role as Gambit, recently remarked on the film's scale:
“Avengers: Doomsday will include moments 50 times bigger than when Wesley Snipes' Blade turned up in Deadpool & Wolverine.”
This December, fans may see the first glimpse of Avengers: Doomsday alongside Avatar: Fire and Ash, setting the stage for a massive superhero event uniting multiple Marvel teams by the end of 2026.
Author's summary: The Avengers: Doomsday trailer is expected in December 2025 with the release of Avatar: Fire and Ash, promising a groundbreaking crossover of Marvel's top superhero teams.