If you live near one of the few BB's doing a midnight release for the game, the first 16 360 and PS3 purchasers get a code to get the first DLC case for free. It has a different name from the Gamestop/Walmart ones so I assume it's a post-release one.
Many Gamestops, but not all, are also doing a midnight launch for the game.
Many Gamestops, but not all, are also doing a midnight launch for the game.