Disinsider's Patreon: Marvel Studios has "extended the [Spider-Man] deal" with Sony Pictures. Dec 17, 08:40
Geekosity: the deal will keep Spider-Man in the MCU for an additional three solo movies Dec 17, 09:09
I wonder if he'll be in Dr. Strange 2, which Feige has already said will build off of Spider-Man 3. Raimi connection also. Seems likely IMO. Dec 17, 12:22