I don't want to be a downer, but
A: He recently said on Instragram Live that he was looking at Friday, September 11th for Hall & Nas 2, as a way to honor New York City.
B: He said on the same live stream that he has a surprise project coming out in July, and that was after he talked about Hall & Nash 2.
C: I can't imagine a Hall & Nash 2 album cover being a Michael Irvin mugshot.
The only way I see this being Hall & Nas 2 related is if there's a song on hall & Nash 2 called Michael Irvin or something, which is very possible too.