Marvel is doing everything it can to make sure Avengers: Doomsday has an unprecedented rollout. The trailers are kicking off with a bang, though: the long-awaited return of Chris Evans, once again playing Steve Rogers. One of the leading fan theories surrounding Avengers: Doomsday is that Steve Rogers’ return to the past caused an incursion, colliding different versions of the timeline together. In the comics, Dr. Doom uses incursions to set off his plan. Avengers: Doomsday premieres in theaters on December 18, 2026.