http://wccftech.com/pubg-update-improves-performance-test/

A new PLAYERUNKNOWN’S BATTLEGROUNDS (PUBG) update is being deployed today on the public test team, which improves the game’s performance on low-end PCs, adds the foggy weather condition, enhances Sky visuals in pre-existing weather effects, optimizes the UI and shadows, and much more.

As covered last week, the update will also add FPP leaderboards to the game alongside more FPP servers. Down below you’ll find the official patch notes for PUBG’s September update, as provided by Bluepoint Studios: