Square Enix gave us the first proper look at a new Marvel character coming to Marvel's Avengers during its E3 Showcase. The King of Wakanda, a.k.a. the Black Panther, will join the game in a new War For Wakanda expansion. The trailer shows Black Panther defending Wakanda from Klaw, who has infiltrated his kingdom to steal Vibranium.
War For Wakanda is scheduled for an August release. It was initially supposed to launch earlier, but the release was reportedly pushed back due to the sudden passing of Chadwick Boseman. He played the superhero in the Marvel Cinematic Universe. For those who own Marvel's Avengers, you'll get the expansion for free. It'll come to the PC, Playstation 4 and 5, and Xbox One and Xbox Series X/S.
Source: The Verge