According to SiliconEra the series hasn't sold that great in North America or western markets in general. Which surprises me, I'd think it'd sell as well here/better than it would in Japan.
Maybe they're looking at the success of other games in the hack-and-slash genre (ie. God of War, Bayonetta?) and want to make DMC more relevant in the category again. :P Not that *I* ever thought it was irrelevant, plus there's WAY worse out there (*cough99Nightscough*) anyway.
And even if that's somehow the case, I'M NOT SURE IF THIS IS THE FUCKING WAY TO DO IT, CAPCOM.