This morning, the second trailer for Spider-Man: Far From Home was released, and with it came a major, post-Avengers: Endgame revelation: there’s now a multiverse within the Marvel Cinematic Universe franchise. Although we’ve visited different dimensions before in movies like Ant-Man and Doctor Strange, now the door is open for these movies to explore parallel Earths, and Jake Gyllenhaal’s Mysterio says he hails from one of these other Earths.
Article source: https://www.cinemablend.com/news/2471374/yes-spider-man-far-from-home-definitely-is-bringing-the-multiverse-to-the-mcu