Arrowhead is working on its next game, but not Helldivers 3
Arrowhead's chief creative officer Johan Pilestedt says a Helldivers sequel would reset everything and make players start over, and he doesn't want to ask that of the community. The studio is officially working on its next game, which he has all but confirmed isn't Helldivers 3, and it plans to keep adding content to Helldivers 2.
Game: Helldivers 2