On November 2, foreign media Deadline reported that Iron Man Robert Downey Jr. and Matt Damon will negotiate to join Nolan's new film "Oppenheimer". The film, along with Dunkirk, is the subject of World War II, focusing on the life of Robert Oppenheimer, the "father of the atomic bomb," and is expected to be released on July 21, 2023.

The story of the thriller biographical film Oppenheimer is based on the Pulitzer Prize-winning biographical literature award-winning American Prometheus: The Triumph and Tragedy of Robert Oppenheimer, a Jewish-American physicist who led the Manhattan Project and developed the atomic bombs that bombed Hiroshima and Nagasaki in Japan, ending World War II.
Previously, the film "Oppenheimer" has been determined to be part of the cast, with Kirian Murphy playing Robert Oppenheimer himself and Emily Blunt playing his wife.
Kirian Murphy can be said to be one of the royal actors of Nolan's director, the two have worked together as many as 6 times, he is the villain scarecrow in the Nolan Batman series of movies, and he is also the rich second generation hypnotized by little plums in "Inception", and he also appears in "Dunkirk".
According to sources, Robert Downey Jr. will play the "villain" Lewis Strauss, who initiated a hearing questioning Oppenheimer's loyalty, which led to Oppenheimer's security clearance being revoked. Matt Damon plays Major General Leslie Groves, an important leader in the Manhattan Project.
"Oppenheimer" is Nolan's first work after ending more than twenty years of cooperation with his old partner Warner Bros. Pictures, turning to the arms of Universal Pictures, assembled into such a luxurious super first-line lineup, Nolan is worthy of the Hollywood god harvester, do you expect the release of the film?