Didn't they already say DmC2 is in development? So... what are we talking about here? Besides, with the Nero fiasco, I doubt they'd go back to the DMC series. Or they'd just develop another DMC game that has little to do with the other DMCs; something like what DMC3 is to DMC1. Or DMC2 to DMC1... etcetera.
Didn't IncarnatedDemon post some links about that a while back, where Capcom mentioned they weren't going to do another DMC or that it was likely never going to happen [I can't remember the exact words T.T]. And I'm sure I heard that too, about a DmC2 being in the works. But it really all depends what happens.
If there was no DmC2, I'd rather the series just died than get another DMC4. Capcom obviously didn't know else what to do with the series otherwise they never would've gone to NinjaTheory in the first place. And you can say you could've done this and that, but you really put pen to paper, it is
extremely hard, to write a decent plot, a script, the setting and revolve a game around that.
And after having 4 different titles with 4 different Dante's in complete different timelines to each other, that is a lot to figure out what with to do next with and how to do it good. There's just so much more you could do with DmC2 because there isn't much weighing it down. Vergil isn't dead, Mundus possibily isn't dead, Dante's devil trigger isn't fully unlocked, then potential of adding in elements from those classics without having a direct remake. There's lot more you can do there, they just need to make it feel more familiar to older fans [which it
does need].