We're gonna jump right into it:
"Set after Avengers 4. Peter is revived, and it appears Tony Stark will indeed die and Peter will be mourning his death," says AHarbingerOfStuff. "The plot revolved around something groundbreaking that Stark has created, and which is stolen and Spider-Man must retrieve."
We are sorta expecting Tony to die in Avengers 4. Still, hearing over and over again that we're going to lose him doesn't make it any less heartbreaking.