TMDb/Superman: Man of Tomorrow Movie Production begins on Superman: Man of Tomorrow. James Gunn teases Lex Luthor's return as David Corenswet faces Brainiac. April 28, 2026 AceShowbiz - The production of Superman: Man of Tomorrow, the highly anticipated follow-up to the Superman reboot, has officially begun. Director and writer James Gunn shared an intriguing glimpse from the set, revealing a chessboard alongside a prison badge marked for inmate A. Luthor, hinting at the return of the iconic villain Lex Luthor.