User blog comment:KATANAGOD/BREAKING: DLC 5 revealed in a blurry uneven pixelated image. Inside sources at Best Buy say "Its legit"/@comment-7336812-20130810102438

It could be a 5th DLC could just be not a very big deal releasing only the four previous dlc zombie maps for a cheaper price than paying for the 4 full DLCs of Black ops.