Global
• Support for screen resolutions with a wider aspect ratio than 16x9, such as those used with AMD's Eyefinity technology
• Stance Toggle option has been added for switching between ranged and melee unit behaviour in all game modes

Multiplayer
• New Map: 2p Judgment of Carrion
• New Map: 2p Ice Station Obelis
• New Map: 4p Desert Showdown
• New Map: 4p Judgment of Carrion
• New Map: 4p Selenon Fissure
• New Map: 6p Argent Shelf
• New Map: 6p Judgment of Carrion
• New Map: 6p Calderis Refinery (Free-For-All)
• New Map: 6p Judgment of Carrion (Free-For-All)
• Added Librarian Unit to tier two of Space Marines
• Added Weirdboy Unit to tier two of Orks
• Added Tyrant Guard Unit to tier two of Tyranids
• Added Gene Stealers Squad to tier two of Tyranids
• Added Wraithguard Squad to tier two of Eldar
• Added the ability to play against owners of Chaos Rising who are playing as the Chaos Race
• Added Free for All and Team Free for All Victory Point game modes to Custom Games
• New target priority system implemented so that idle units prefer attacking enemies they specialize against
• Vehicle wrecks now remain on the map and provide cover

The Last Stand
• Added the ability to play with owners of Chaos Rising who are playing as Chaos Sorcerer or Hive Tyrant

Campaign
• Added the ability to transfer save games of completed Aurelian Campaigns to Chaos Rising
• Added the ability save during mid-missions (Chaos Rising Campaign Only)
• Wargear tooltips in both campaigns now contain significantly more information such as attack speed, accuracy, etc
• New 'Invite a Friend' button added to the bridge to easily invite friends to a co-op game