A big patch heading to Battlefield 4 on all platforms is planned for release before the end of September that will see numerous changes to DICE's shooter.
According to the official Battlefield blog
, certification for the patch has already been sent out for many of the game's platforms. There are a lot of updates in the fall patch, and you can find the full details here
Some of the highlights include improvements to looking down the sights of a gun, player movement will feel closer to Battlefield 3, revives are more robust and easier to understand, the implementation of the Teamplay Initiative, and way more that would make this post far too long.