With the Call of Duty: Black Ops Escalation Map Pack now less than a week away on Xbox 360 and it hopefully heading to PSN a month or so later, Activision and Treyarch are continuing their promotional assault, with another new trailer showing the four multiplayer maps and the star-studded zombie map in action. We wouldn't be surprised to see the video popping up on television during commercial breaks soon. Acti did it before with Modern Warfare 2's map packs, remember?

The Call of the Dead zombie map will feature Danny Trejo (Machete), Robert Englund (Nightmare on Elm Street), Sarah Michelle Gellar (Buffy) and Michael Rooker (The Walking Dead) alongside eminent zombie movie director, George A. Romero. That sounds like it might be worth the asking price alone, but the Hotel, Zoo, Convoy and Storage maps will also be providing added value for Black Ops online multiplayer.

Take a look at the new trailer for a look at all five tasty new maps, which will be yours to take-away for $14.99 in a month or two. Exact dates for the PlayStation Network are to be confirmed, so keep your eyes peeled!