Amazon just put up on their Kingdom Hearts Dream Drop Distance page that if you pre-order from them you will get a "set of AR cards to unlock exclusive Dream Eaters in-game." In Japan, Square has been offering AR Cards containing exclusive Dream Eaters through magazines like V-Jump and Famitsu, but it is unknown whether the Amazon AR cards are the same ones as those.

PS. Any one think that Dream Eaters are going to be the Skylanders of this year (And yes I do know there is going to be another Skylanders game this year?

Inevitable Pokemon AR cards will become the new Skylanders!

God I'd totally buy a pack if it were true, not even lying.

Woo! Preorder DLC. In physical form.