OFFICIAL: @Disney has confirmed that actress @brielarson will be appearing on @GMA this Tuesday for CAPTAIN MARVEL, during which she will reveal the first trailer for the film! pic.twitter.com/7TipUExCtv— MCU News & Tweets (@MCU_Tweets) September 14, 2018
Disney's official press release and GMA's official list of guests for the week have Brie Larson on Tuesday morning!! aaahhhhh!!! There will apparently be a poster reveal for the movie as well.
Tuesdays date was heavily speculated after the EW magazine cover that came out last Friday as Tuesday 9/18 is the United States Air Force 71st birthday (and Brie has been in NY for NYFW according to her IG).
Captain Marvel will be released on International Woman's Day March 8, 2019.