DICE released a gameplay-balancing fix that also introduces some tweaks and changes to the HUD as well as some netcode enhancements.
Balance of certain modes is also addressed, and well as visual recoil and soldier movement. For a comprehensive list of changes, see the Battlefield Blog.
Origin Game Time has a special promo for one free week of Battlefield 4 play, so if you’re interested in trying the game out on PC, give that a shot.