We still don't know what Christopher Nolan's next film is about, but we do know it will star John David Washington of "BlacKkKlansman" and HBO series "Ballers."

It's being described as an "event film" and it has a release date of July 17, 2020.

An insider tells Variety it will be a "massive, innovative, action blockbuster" and that it will be in IMAX.

Besides starring in Spike Lee's Oscar-winning "BlacKkKlansman," Washington (the son of Denzel Washington) also starred in the lesser-seen cop drama "Monsters and Men."The former earned him Golden Globe and SAG nominations, the latter,  an Independent Spirit Award nomination.

[Via Variety]