GB: “Its been five years since Batman: Arkham Knight, which means that for five years, we havent been able to step into the shoes of Gothams Dark Knight in a new game in a long, long time. But though its become clear that Rocksteady have moved on to a new, different kind of project, that doesnt mean the Batman series has been put on the back burner. Because something else thats becoming quite clear over the last few years is that Batman: Arkham Origins developers WB Games Montreal will be taking the reigns of the series.”
Source: N4G PC 9 Things We Wish To See In The Next Batman Game