The update will include Spartan Ops episode 7, which is comprised of five new missions, plus the addition of the 'Grifball' playlist.
Grifball has two teams of four battling with Gravity Hammers and Energy Swords, attemtping to plant a bomb on the opposing team's spawn point.
Also happening next week is the unlocking of two new Specializations, Engineer and Stalker:
Engineer: Spartan optimization for the subversion, repair and reconstitution of a wide range of technology, including Covenant and Forerunner complex networks. The Drop Recon Armor Mod allows users to predict the location and time of an Ordnance Drop through an external suborbital monitoring system.
Stalker: Spartan optimization for target shadowing missions which require tactical invisibility despite operating at an extremely close range to the target itself. The Nemesis armor mod allows users to target and track down previous attacking enemies, highlighting them on the armor's passive sensors.
Microsoft outlined its Halo 4 DLC release plans for January and February in a recent list, confirming episode dates and multiplayer updates.