Happy new Avengers: Endgame trailer day! While at first glance the new trailer might seem to be heavy on flashback footage from previous films, in fact there’s quite a bit to dig into here and speculate about. Which is of course half the fun of these movies. Take, for example, those new Avengers: Endgame white suits. What’s the deal with those things?
The reveal of the suits comes near the end of the trailer, as we see a bunch of Avengers marching through the hangar bay of their headquarters The Right Stuff style (which, by the way, was one of the VHS movies Captain Marvel checked out in that Blockbuster Video in her film). A variety of Avengers — and at least one Guardian of the Galaxy — are donning the costumes, including Captain America, Iron Man, Black Widow, Hawkeye, War Machine, Ant-Man and Nebula. (And yes, we know Ant-Man isn’t technically an Avenger in the MCU yet — though maybe he is by the time this scene takes place, as membership is definitely down since the Great Decimation).
Source: IGN.com Explaining the Avengers New White suits