New information on Call of Duty: Black Ops 2's heavily-rumoured 'Revolution' DLC has slipped out via an Amazon listing, according to a report.

OXM reports that the now-removed Amazon listing revealed descriptions for each map and weapon in the DLC pack, which is still yet to officially announced despite various leaks including retail posters and seemingly premature ads on the game's official website.
According to previous leaks, content pack will contain four new multiplayer maps: Hyrdo, Grind, Downhill and Mirage, along with a Zombies map called 'Rise' and the new Peacekeeper SMG, and will release on January 27.

Here are the alleged descriptions for each map and the SMG:

Hydro - This large map allows you to use the dam and water to your advantage to block paths and stop enemies.

Downhill - A medium-sized map based in the French Alps complete with snow, chair lifts, and a strategically placed lodge.

Grind - Set within the locale of the Venice, California boardwalk, this small skate park map is sure to deliver fast and frenetic Call of Duty action.

Mirage - This Gobi Desert multiplayer map utilizes sand dunes to provide different levels of elevation and a sanctuary in the center as a natural chokepoint.

Zombies - Die Rise - The Zombie apocalypse has invaded China, turning down town into a dilapidated and dangerous MC Escher painting.

Peacekeeper SMG - This impressive sub-machine gun fills the open weapon slot in your load-out with power and accuracy.