That part is all conjecture based off of unnamed sources though. It hasn't been confirmed by anyone.
"According to sources, the project is being set up as a Black Superman story. This is something that the studio has been trying to wrap its head around for months, if not a year or two. Michael B. Jordan tried to develop a Black Superman project when he first arrived at the studio with his deal in 2019, but that did not go very far at the time, according to sources. It is possible that the studio could return to him to star down the line."