Most likely working on DMC5. Their integrated report from last year depicted their pipe line for the 2016-17 fiscal years (the 2017 fiscal year ending March 31st 2018) implied that a new DMC game is in development. Development of DMC4SE was outsourced to Access Games.
Yeah, there's really not much else that the guy and his team could feasibly working on, at this point. When they'll finally let us SEE it is probably the better question.