User blog comment:Argorrath/Treyarch posts a message of zombies; possibly hinting to a DLC 4/@comment-71.197.43.36-20130805144538/@comment-20037936-20130806211122

PTG said that if you bought their album or song or whatever on iTunes, you'd get a head start on the Easter Egg. They said you had to complete Die Rise's Easter Egg to do MotD's. They said that Buried would suck and they wouldn't cover it at all, but look how that turned out?