Board Thread:Destinypedia Forum/@comment-70.68.115.104-20141006065907/@comment-64.4.83.226-20141223184316

It's not unreasonable to suggest that they will add another subclass for each class; you can clearly see a third space in the menu. If they do, it seems silly not to base it on anything but the missing element (Void for Hunters, Solar for Titans, Arc for Warlocks).