Technically, it was Broforce Forever (the 2023 update). But the fans don’t count that as a true sequel. They consider it a "liberty patch." A real sequel—let alone a threequel —implies a jump to 3D. Or destruction physics. Or co-op campaigns where you can accidentally launch your buddy into a pit of lava.
Whether it launches next year or in 2030, one thing is certain: Broforce 3 will be the most gloriously stupid, mechanically brilliant, friendship-destroying co-op experience of the decade. broforce 3
So polish your guns. Stock up on protein shakes. And for the love of liberty, Technically, it was Broforce Forever (the 2023 update)