James Gunn has been discussing his upcoming film, Man of Tomorrow, which appears to focus on the dynamic between Superman and Lex Luthor. The film is described as a personal and hopeful story that explores the complexities of these characters, with some outlets suggesting they may team up against a larger threat. The details of the plot and characters are still emerging, with Gunn teasing the ramifications of a Peacemaker cameo and the film's overall tone and themes.