Backing up an earlier rumor, zombies are returning to Call of Duty's online multiplayer as part of a "season pass" full of DLC that costs almost as much as Call of Duty: Advanced Warfare itself.

Correction: Activision has clarified that the zombies maps will be made available separately; a season pass is not required to get them. No price or launch date for them has been announced, but previous packs were about $15.

The original post follows.

The $49.99 season pass, announced through a GameStop press release, includes four packs of multiplayer maps and a bonus map, "Atlas Gorge," which is a remake of Pipeline from Call of Duty 4: Modern Warfare.

The release did not give a specific arrival date for Advanced Warfare's zombie maps. The first map pack is due to arrive on Xbox One in January, followed by other platforms later.

Call of Duty: Advanced Warfare's official launch date is Tuesday, but Best Buy is opening a bunch of stores at midnight ET — tonight — to sell the game. That means 9 p.m. today on the west coast.