The first track of the mini album was used in the commercial for Biohazard Operation Raccoon City, as advertised on the sticker on the front. The second edition came with an obi and probably a poster.
It looks slightly different to the first edition, and it was no longer possible to win a T-shirt. All shops list the release date as 2012.08.29, while the date printed on the back insert is two days earlier.
1. Front with sticker and obi
2. Back with obi
Thanks to Otaku (images 1-2).