First, the MCU’s most successful film of all time domestically, Black Panther, was released in February of this year, and I can definitely imagine that Marvel would want to try and recreate those conditions for Black Panther 2.
If I were to take a wild guess, I would say that we will be returning to Wakanda on February 12, 2021.
It would be appropriate and probably make smart business sense to position Black Panther 2 again in Black History Month and deliver another insane box office performance.
Whatever this title is, it is not filming yet and isn’t switching with something else, it’s just being moved up.