Well, this came out of nowhere, but it makes sense in retrospect, considering Captain Marvel released last week and this could give her movie a small boost with her appearing in it.
Still they’re holding their cards to the chest, as nearly half the trailer is simply clips from previous pivotal movies in the Marvel Cinematic Universe. Really framing Avengers: Endgame as the swan song for a lot of these characters and the story that started in The Avengers.
Along with this new trailer, we got a new poster to accompany it, which looks far emptier than the one for Avengers: Endgame.
Thanos has been pushed to the background, while Captain America takes front and center. Though, it is odd why Danai Guirira’s name is excluded from the poster, despite her character appearing in it.