Kevin Feige announced that a Fantastic Four reboot, which will be set in the MCU, is in development as part of Phase 4 alongside sequels including Black Panther: Wakanda Forever (2022), Guardians of the Galaxy Vol. 3 (2023), The Marvels (2023) and reboots of Blade (2025) and X-Men.
Marvel fans have been campaigning for years to have John Krasinski and Emily Blunt play Reed Richards/Mister Fantastic and Susan Storm/Invisible Woman, as they are married in real life and already have solid power couple chemistry onscreen. Krasinski has reportedly wanted to play Mister Fantastic after seeing a fan-art of he and his wife as the characters, but in an interview with Blunt, she claimed that Marvel Studios have not contacted either of them about Fantastic 4. Even if they did, she is not a fan of superhero films. Fans have also campaigned to have Zac Efron play Johnny Storm/Human Torch.
Marvel Studios regained the film rights to Fantastic Four after Disney bought most of 21st Century Fox's film and TV assets, including franchises.
Fans wanted director Brad Bird to direct the film because of his Incredibles superhero films, which were focused on a superhero family based on the Fantastic Four.
Kevin Feige officially announced on December 10, 2020 that the movie is in development and will be part of the Marvel Cinematic Universe.