However this is accomplished, it’s entirely possible that the events of Infinity War and Peter’s resurrection could be addressed in Spider-Man: Far From Home, unless, of course, that some timey-wimey goings on in Avengers: Endgame mean that said events never occurred in the new timeline, in which case from Peter Parker’s perspective, there’s nothing to address.
The events that go down in both Avengers: Infinity War and Avengers: Endgame will have a serious impact on Spider-Man: Far From Home — and we’re not only saying that because the Wall-Crawler has a part in both movies.
Avengers 4, then, will need to restore the hero in some way, though we have no clue how that could work right now.
As alluded to earlier, it has been confirmed that the events that play out in the sequel will begin literally minutes after the end of Endgame.