Christopher Nolan's World War II film about J. Robert Oppenheimer and the development of the atomic bomb will be made by Universal Studios, marking the first time in nearly two decades that the director has not filmed a movie for Warner Bros.

The yet-untitled feature will cover the Manhattan Project, that is, the making of the atomic bomb that ultimately put a definitive end to World War II in the Pacific, a few months after the war ended in Europe. It will be focused on the lead scientist, theoretical physicist J. Robert Oppenheimer.

Production is now expected to begin in the first quarter of 2022. Christopher Nolan is producing the biopic alongside his wife and producing partner Emma Thomas for Syncopy Inc. This will be Nolan's 12th feature film.

The film will presumably focus on Oppenheimer's work on the bomb on Manhattan Project, including his role in the Trinity test in New Mexico, where the first atomic bomb was successfully detonated.

Source: Press Release