Technically, filming for Spider-Man 3 already had begun when last week production was seen doing some early second unit filming. However, with filming having wrapped on the upcoming film adaptation of the popular video game franchise Uncharted, Peter Parker/Spider-Man himself, Tom Holland, has officially begun work on the film, noted by a Twitter he released earlier today as he landed in Atlanta, Georgia where the main production is set:
A lot of mystery surrounds the untitled third solo installment of the MCU's version of Spider-Man, particularly after Jamie Foxx was announced to be returning as Electro...from the Amazing Spider-Man films he starred in. However, with the earlier announcement that Benedict Cumberbatch will take over the mentor role that Samuel L. Jackson's Nick Fury and Robert Downey Jr.'s Tony Stark had filled in Holland's other Spider-Man films, an idea has begun to emerge why that is.
Phase 4 of the Marvel Cinematic Universe is expected to center around the Multiverse that this year's WandaVision series will begin on Disney+ and lead directly into the film Doctor Strange in the Multiverse of Madness (Which Elizabeth Olsen is set to appear in as Wanda Maximoff/Scarlet Witch). In addition, rumors have been flying that previous Spider-Man actors Tobey Maguire and Andrew Garfield will make an appearance in the bulk of the third act of Holland's new installment. When Sony was confronted with the rumor, their exact words were "Those rumored castings have not been confirmed". Not to mention Holland's version had previously spoken about the Multiverse in his last solo adventure Far From Home when that film's villain, Mysterio, had claimed to be from another Earth. It's only icing on the cake that original Spider-Man director Sam Raimi is helming the Doctor Strange sequel. So it's a strong bet that this film will unite all previous live-action incarnations of the webslinger. But, for now, it's still a rumor and must be treated as such.
The untitled third Spider-Man film has already confirmed the return of co-stars Zendaya, Marisa Tomei, Jacob Batalon, and Tony Revolori. Jon Watts will once again direct with the film currently set to hit theaters December 17, 2021.