Marvel made the announcement Tuesday, citing the brothers' work on "Captain America: The Winter Soldier" and its upcoming sequel, "Captain America: Civil War," as evidence of their keen eye for the Marvel Cinematic Universe. The "Civil War" storyline, which features the Captain (Chris Evans) going head-to-head with Iron Man (Robert Downey Jr.) will feed directly into the third "Avengers" flick's plot.
When news first broke of the Russos' involvement in "Infinity War," it was reported that both films would shoot back-to-back sometime in 2016. Marvel's announcement did not comment on that possibility, and it's unclear exactly when work on the films will commence.
"Avengers: Infinity War - Part 1" is due in theaters on May 4, 2018, and "Avengers: Infinity War - Part 2" is slated for release on May 3, 2019.
Before then, the hotly-anticipated second film in the "Avengers" series, "Age of Ultron," will hit theaters on May 1.
Photo credit: Marvel.com