I'm guessing Dante's DT will a power-up Super. And since Nevan is being used I'm sure his other DMC3 weapons will have their place as well.
Also, I hear many in Capcom are really advocating for a proper sequel to Darkstalkers. And all this talk of Dante vs Morrigan makes me want him in the next Darkstalkers game. Capcom's already had Dante have some business with Jedah so why not expand it?