I'm looking at the pre-orders that are available for BF4, and there seems to be the following:

BF4 normal edition
BF4 Deluxe Edition
BF4 Premium Membership.

The Deluxe one seems to give you 2 expansion packs, while the Premium one gives you access to all the ones that are to come.

If I've got that correct.. then there's no point in getting Deluxe+Premium, is there? It's either Premium+base_game, or Deluxe.