But like any Marvel production, details about the film are being kept heavily under wraps.
In fact, when ET chatted with Boseman's costar, Sterling K. Brown, at the This Is Us FYSee event on Wednesday, the 41-year-old actor would only give one word to describe the film.
"Dopeness," Brown shared with ET’s Lauren Zima while explaining why he's sworn to secrecy.
"What Sterling has learned about being a part of the Marvel universe is don't start none, won't be none," Brown joked. "Which basically means, you gotta take that microphone back and talk to [Boseman] or somebody way higher than me. ‘Cause I ain't giving away nothing."