Sony Pictures recently released the full screenplay for Spider-Man: No Way Home, and while it was clearly the shooting script rather than an early version with any deleted scene, it still contained a few surprises.
Two of those have now been discovered, and at least one could have major implications for Spider-Man 4. At the end of the movie, Doctor Strange casts a spell that makes the entire MCU forget Peter Parker; as a result, no one knows who is beneath the mask, while everyone who ever knew or loved Peter (and the world at large) has no recollection of him ever existing.
It's pretty traumatic for the teenager when you stop and think about it, but is there a chance MJ will find her way back to the wall-crawler? In the screenplay, it's revealed that when he visits her in that diner, there's "a filcker of déjà vu on her face." Later, it's noted that MJ "[watches] Peter go with a lingering sense of...recognition?"
The insinuation here appears to be that Doctor Strange's spell wasn't completely foolproof and that there's a chance MJ's memory of Peter is buried somewhere deep inside her mind. In the comic books, when the Sorcerer Supreme hid Spider-Man's secret identity, all he had to do was unmask in front of someone in order to restore their memory. Perhaps the power of love will win out?
Elsewhere, we learn that the elderly customer MJ was shown talked to when Peter entered the diner was written as a "Stan Lee Look-Alike." A quick search on Twitter points to only a very small handful of fans believing the extra looked like "The Man," and we're guessing plans changed.
Spider-Man 4 still hasn't been officially announced, though Marvel Studios President Kevin Feige previously hinted that work has already begun on developing that fourth chapter.