This update adds all new headshot indicators to the game. There will now be a headshot icon in the kill feed if a player was killed with a headshot, and headshot information will be displayed on the stats screen at the end of the round if a player had any headshot kills.
The game settings have also been expanded for various audio channels. This will allow you adjust the volume for different parts of the game. These settings will also save via Steam Cloud Sync so you can keep the same settings across any of your computers.