The update brought a large number of tweaks and fixes — as well as the implementation of eSports performance enhancements in mulitplayer — to the PlayStation 3, PlayStation 4, Xbox 360, Xbox One and Windows PC versions of the game. There is currently no word on the update hitting the game's Wii U version.
Along with stability tweaks, hotfixes and some balance changes to a handful of weapons, the patch brings updates to three playlists and adds the Heavy Duty health option to Private Matches. The multiplayer lobby also has new menu music and party chat can now be disabled during Search and Rescue, Search and Destroy and Infected missions. Extinction has five new prestige ranks and now allows players to customize their appearances with the Create a Soldier feature. A handful of anti-cheat measures have also been added; players can no longer use more loadouts than normal and users can't share camos and reticles with each other that have not been previously unlocked.
Several platform-specific features have also been added. Improvements have been made to Kinect voice handling for the Xbox One version of Ghosts. On both Xbox One and Xbox 360, a problem where functionality would be lost when one player signed off from split-screen play has been fixed. The PS4 version has been tweaked for optimization with PlayStation Vita Remote Play. A number of fixes have also been made to the Windows PC version, including some issues with resizing windows, shadows flickering, friends list sorting and prone accuracy exploits.
A full list of the extensive fixes is available on the CoD community forums.