https://www.gamespot.com/articles/pubg-pc-update-rolls-out-tonight-adds-emote-system/1100-6457331/

A new update is on the way to PlayerUnknown's Battlegrounds. Starting tonight, March 12, at 7 PM PT / 10 PM ET (3 AM CET on March 13), developer PUBG Corp. will take the PC servers down for roughly three hours as it performs maintenance and moves the current test build over to the live game.

This marks the seventh major update PUBG has received since leaving early access back in December, and it introduces a number of new features to the game, such as the previously announced emote system. Following the update, players will be able to use 12 different emotes; PUBG Corp. says it will further expand the system with more emotes in the future.