Here’s what we know so far:
Tenet is an upcoming action thriller film written and directed by Christopher Nolan and produced by Nolan and Emma Thomas. It stars John David Washington, Robert Pattinson, Elizabeth Debicki, Dimple Kapadia, Michael Caine, and Kenneth Branagh. Tenet is scheduled to be released by Warner Bros. Pictures on July 17, 2020 in IMAX, 35mm, and 70mm film.
So that is not much to go on but we have so far looks amazing.
Apparently the film is described as an action epic revolving around international espionage, time travel, and evolution. Either way consider me sold