I think all original VAs will return to their roles. I think the real question is who will voice Patty?
They might not do, Troy Baker would probably demand more this time around, and unlike before Microsoft are not footing the bill for this one, and it's not a small task either, all the skits are voiced in this version of the game.
I have no idea who will voice Patty, probably someone who sounds like a annoying brat. I don't think Bamco have made any announcements regarding the VA's for the western release.