Wikimedia Commons/Marvel Cinematic Universe Movie Marvel's MCU slate extends beyond Avengers: Secret Wars. Discover the five mysterious release dates confirmed for 2028 & 2029 and what films could fill them. March 25, 2026 AceShowbiz - The Marvel Cinematic Universe continues to expand rapidly, with fans eagerly awaiting its next big film, Spider-Man: Brand New Day. While this highly anticipated release is set for July 31, 2026, Marvel has already locked in several other major movie release dates extending beyond the current slate.