While we don’t really even know what the Black Adam movie is all about for sure, expectation is that the film will act as a sort of prequel to Shazam!, as the character was referenced, though not by name, briefly in that film. So one assumes that Black Adam and Shazam will come face-to-face at some point down the road, but whether it ever expands beyond that is anybody’s guess.
Article source: https://www.cinemablend.com/news/2491613/the-rocks-latest-black-adam-tease-warns-dcs-hierarchy-of-power-is-about-to-change