The highly anticipated Avengers: Doomsday trailer is set to debut in December, according to Collider. The trailer will reportedly be attached to the latest installment of Disney's blockbuster franchise, Avatar: Fire and Ash, which is set for release on December 19, 2025. This strategic move could potentially boost the visibility of both films. However, it's important to note that release plans can change, and Avengers: Doomsday is scheduled to open almost a year later on December 18, 2026. The movie's plot remains a closely guarded secret, but it's known that it will bring together the Avengers, Fantastic Four, and the original X-Men for the first time on the big screen. The cast includes a stellar lineup of actors who have previously appeared in Marvel projects, such as Brie Larson, Famke Janssen, Elizabeth Olsen, Charlie Cox, Andrew Garfield, Halle Berry, and Chris Evans. Despite their coyness, Channing Tatum, who returns as Gambit, has hinted at epic moments in the film, surpassing the scale of Wesley Snipes' Blade in Deadpool & Wolverine. Additionally, fans recently got a glimpse of 28 Doomsday characters in costume, and Disney revealed Robert Downey Jr.'s Doctor Doom through promotional artwork and videos. For more Marvel Cinematic Universe updates, readers are encouraged to explore loose ends, watch the Wonder Man trailer, and speculate on Sadie Sink's role in Spider-Man: Brand New Day.