Marvel reveals Avengers: Doomsday trailer with RDJ as Doctor Doom and new heroes.

Marvel released the first trailer for "Avengers: Doomsday" at CinemaCon, revealing Robert Downey Jr. as the villain Doctor Doom. The film, set for release on December 18, 2026, features a major crossover with the X-Men, Fantastic Four, and legacy heroes like Chris Evans returning as Steve Rogers.