Here are the release notes for Battlefield 4 for the PC, If the game update doesn’t start automatically for you, you can trigger it by going into the Origin Client, right clicking Battlefield 4 and selecting “Check for updates”.
Jan 13 PC Game Update Notes
-Various fixes for improving general stability
-Fixed a memory leak issue occurring after level shutdowns, which could result in a out-of-memory crash in longer play sessions
-Additional fix for the “sound loop” deadlock when running High/Ultra graphics settings
-Added a warning for using Legacy AMD drivers that were out of date
-Fixed a player feedback timing issue where blood was appearing before other damage indicators, and before damage was actually done
-Fixed a bug where players’ rank icons on the scoreboard would not be updated
-Fix for Asian users unable to start Battlefield 3 and Battlefield 4 on Windows 8.1
-Normalized repair rates across all vehicles.
-Fixed problem with killer health in kill card not being correctly updated (showing 100% health even though the soldier was hurt)
-Fix for friendly marker not always showing when needed to, resulting in players shooting team members
-Fixed a bug where a Main Battle Tank Coaxial HMG ammo box was occasionally blocking the driver’s camera
-Increased damage by 25% for the Stealth Jet 20mm cannons.
-Stealth Jets now have more similar handling attributes to each other. F35 & J-20 are slightly more agile, Su-50 is less agile.
-Attack Jets now have more similar handling attributes to each other, and all 3 are now slightly less agile than earlier
-Fixed camera glitch when switching weapons while moving in crouch
-Fixed an occasional bug where players could experience intermittent engine sound dropouts when driving wheeled IFVs
-Fix for player spawning under the map when deploying on Lancang Dam
-Fixed flickering in map and minimap on Rogue Transmission and Operation Locker