According to the Atlanta Filming Twitter account, Brie Larson has been spotted on the set of Avengers 4 with Chris Evans.
It's assumed that Brie Larson will be appearing in Avengers 4 following her debut in the Captain Marvel movie a few months prior.
Marvel Studios has not officially announced Brie Larson and Captain Marvel for Avengers 4 as of yet.
The Captain Marvel movie hits March 8, 2019, with The Avengers 4 getting released May 3, 2019.
The Avengers: Infinity War also has a May 4, 2018 release.
As the Avengers and their allies have continued to protect the world from threats too large for any one hero to handle, a new danger has emerged from the cosmic shadows: Thanos. A despot of intergalactic infamy, his goal is to collect all six Infinity Stones, artifacts of unimaginable power, and use them to inflict his twisted will on all of reality. Everything the Avengers have fought for has led up to this moment - the fate of Earth and existence itself has never been more uncertain.