https://www.cnet.com/news/avengers-endgame-will-be-stan-lees-final-marvel-movie-cameo/

But since Lee's death at age 95 in 2018, it's been unclear how many more posthumous cameos would be granted to the late, great comic book creator, until now. 

"It's his last one committed to film," director Joe Russo told the media on press day in Los Angeles on April 13.