"One of the things that I think is so amazing about this experience is that you don't have studios deciding to work together to make a film very often. In fact it may never happen again, after we do the sequel. Because Sony, and Disney, and Marvel all decided that the right thing to do was to allow Peter Parker and Spider-Man to be in the MCU and to work with the Marvel guys and have them produce this film. And I think that was a very rare thing for three companies to do, and a very brilliant thing for them to decide to do because there are only so many stories that you can tell again and again and again about Spidey, and this is something that we would have never been able to do in any other way. So it was a very selfless thing that very smart on the part of all the companies." - Amy Pascal
http://collider.com/spider-man-homecoming-2-mcu-marvel-sony/
Marvel's landmark deal with Sony has allowed the wall-crawler to enter the MCU, and Feige confirmed Spider-Man will appear in 2019's untitled
Avengers 4. That's after his starring turn in
Spider-Man: Homecoming and 2018's
Avengers: Infinity War. After the second Avengers appearance, it will be back for a Homecoming sequel, set for 2019.
"That's as far as it goes for now," said Feige. (For now? Hmm.)
https://www.hollywoodreporter.com/h...movies-guardians-2-joss-whedons-dc-move-99507