if it's been explained i missed it so please explain again but i just read my emails and they sent me the killer thing saying it's being released and so on but then i realized it said if u reserve it u'll get a limeted edition cd and the limited track, now i know killer is the track but what's going to be limited about the pre-order ones? and if anything can they be picked up at stores? i dunno just curious and i already pre-ordered mines so i'm straight no matter what but thought it was interesting