Unofficially, however, there have been a scattering of reports and rumors related to the story, from Black Widow battling the Yakuza to Clint Barton reportedly taking on the Ronin guise.
So far the only major pieces of official news regarding Avengers 4 is that Brie Larson will reprise Carol Danvers following her debut in Captain Marvel a few months earlier, and this movie will likely be the last time that we see Chris Evans play Steve Rogers.
Set photos have also popped up showing that the movie will be revisiting key moments in the MCU’s past, and while I originally suspected that this might mean time travel is in the mix (after all, there is an Infinity Stone that can manipulate time), Joe and Anthony Russo have hinted that this will actually be accomplished through Tony Stark’s BARF technology.