Cartographer's Gift

Cartographer's Gift is a content update for Halo 5: Guardians that will be released in December 2015. The update will include an improved Forge mode, the four new multiplayer maps Overgrowth, Battle of Noctus, Antifreeze and Entombed, and more than 25 new REQs for armors, weapons, emblems and more.

Maps
The content update has 4 new maps for Arena, Warzone, and Big Team Battle:
 * Overgrowth for Arena
 * Battle of Noctus for Warzone
 * Antifreeze for Big Team Battle
 * Entombed for Big Team Battle

Forge
With the release of Forge mode there are three new Forge canvas maps
 * Alpine
 * Glacier
 * Space