The first footage for Avengers: Doomsday is set to debut unusually early. According to Collider, the trailer will be shown ahead of Avatar: Fire and Ash, James Cameron's upcoming third film in the Avatar series. This new installment, featuring Pandora's Ash People, premieres on December 19, 2025.
The Avengers: Doomsday trailer will premiere almost exactly one year before the movie’s release date on December 18, 2026. This is an earlier preview compared to prior Avengers films:
This extended 12-month buildup may reflect Marvel Studios' strong confidence in Doomsday, potentially sparking significant fan speculation for a film mostly kept under wraps until now.
Known casting details include Robert Downey Jr., alongside members of the Fantastic Four and Thunderbolts teams. Several iconic MCU heroes and legacy X-Men characters will also join the film. The complete cast list was disclosed in a six-hour live stream back in March.
“Avengers: Doomsday could be the biggest film of the decade,”
This early trailer release ahead of Avatar: Fire and Ash highlights growing anticipation for Avengers: Doomsday, promising a major Marvel event with an expansive cast and notable confidence from the studio.