Battlefield 4 is out today in the States and reviews are exploding everywhere. The game’s first multiplayer update has been released on Xbox Live and DICE is strongly advising players to download it.
The 119.21MB ‘Multiplayer Update 1’ can be found on the Xbox Marketplace along with the descriptor, “This Battlefield 4 update contains improvements to the multiplayer portions of the game. We strongly advise you download it.”
Beyond that, it’s not clear what the patch does.