There are a number of preorder incentives from a bunch of different retailers. I'm mainly looking at all the exclusive adversarial and Co op maps. Will these be released for free later or unlockable through completing in game challenges? If they are sold later i'm going to feel slighted because then it's as if I preordered but I just didn't get the "right"preorder and now have to pay for it later. Not to mention I think this divides the community because I can't play with a friend because we preordered from different stores. I think that's pretty weak. Can anyone give any info on this?