judging by the logo, Black Ops 4 will probably be another futuristic shooter. I played Black Ops 3 and thought it was dull. Black Ops 1 & 2 were amazing, despite being two very different games.
Titanfall 2, in my eyes, is the only modern futuristic shooter that has gotten the advanced movement mechanics right. I hope BO4 cuts out some of the awful movement that was in BO3.