Brace yourself for this because, as of this article, Tom Holland's Spider-Man is NO LONGER IN THE MCU thanks to Sony Pictures and Walt Disney Studios failing to come to terms over the future of Spider-Man movies.
According to our friends at Deadline, Sony is pulling the character from the control of Marvel Studios and producer Kevin Feige because of money and a producer credit:
“Disney asked that future Spider-Man films be a 50/50 co-financing arrangement between the studios, and there were discussions that this might extend to other films in the Spider-Man universe. Sony turned that offer down flat [...] Sony proposed keeping the arrangement going under the current terms where Marvel receives in the range of 5% of first dollar gross, sources said. Disney refused.”
This means that we won’t be seeing any form of Spider-Man, or his characters, in any more Avengers or other Marvel Cinematic Universe movie for the foreseeable future. Tom Holland is still contracted to do two more Spider-Man films, but as of right these movies will be standalone and completely done with Sony Pictures.
Maybe we'll get a redo of Spider-Man vs. Venom?