Not really. I've said before that it makes sense for the larger iPhone to be the premium model, and perhaps it will have a few extra features that the 4.7 does not. Maybe better camera? We know the battery will be bigger, but so will the screen, so it remains to be seen how much better battery life the 5.5 will get. Or maybe there are no extra features, and the plus simply means that it's larger, like a plus sized woman model.