Do I have to complete SP COD AW to unlock Zombie Mode?

I heard you have to unlock it, is that by playing through the single player mode?

that was the case in the first ever zombie appearance (at least that i know of) cod: world at war, i have only played the first mission of aw yet, but my guess is so... :D

Correct if im wrong but isn't zombie mode part of a upcoming dlc and not apart of the main game?

You need to buy the DLC to unlock zombies.

"the Zombies mode will indeed be sold separately as standalone, unpackaged DLC some time next year, and it was nothing cut from the core game. They also stressed that this is Sledgehammer’s take on Zombies, and fans probably shouldn’t expect a clone of exactly the same style of play a-la-Treyarch"

taken from forbes...

he is talking about the teaser level....