According to Bethesda's Twitter, Fallout 4 will not have a level cap to give players replayability options.
To our fans who’ve asked: Fallout 4 doesn’t end when the main story is over and there is no level cap. You can keep playing and leveling.— BethesdaGameStudios (@BethesdaStudios) August 6, 2015
Will no level cap give you more reasons to keep playing when the story is over? Let us know!