Tonight's update for Counter-Strike: Global Offensive includes some improvements to the game's positional audio. The team added in HRTF (head-related transfer function) to allow for better 360 degree positional audio.

The update also includes some special Christmas cheer.

CS:GO update for December 7, 2016

Holidays
– Deployed Holiday Cheer for your festive fragging season.
– You can spread the Holiday Cheer! Gifts are now available for a limited time.

Sound
– Added new audio option that enables Head-Related Transfer Function (HRTF) processing on in-game sounds. The goal is to vastly improve 360 degree vertical and horizontal sound positioning.
– By default, Speaker Configuration in Audio Settings has been set to “Headphones with HRTF.” Selecting an alternative speaker configuration will disable HRTF.
– NOTE: For an optimal experience with HRTF, we recommend turning off any external 5.1 or 7.1 surround audio driver options.

Public Lobbies
– In the friends panel “Steam Groups” have been renamed to “Public Lobbies”.
– The “Public Lobbies” tab now shows nearby public lobbies and suggested steam group lobbies in addition to your steam group lobbies.
– Lobbies now support broadcasting to nearby players. Players can use this setting for friend or steam group lobbies.
– Steam Group lobbies now display the country associated with the majority of lobby members.

Gameplay
– Third-person weapon angles now visibly match first-person weapon recoil.

MISC
– Fixed 5 Year Veteran Coin to be granted to accounts that cancelled and later reactivated their old Counter-Strike license after they restart their CS:GO client.
– Loading screen tokens can now be localized when loading Overwatch evidence or maps created by community members.
– Bot names can now be localized in game language.
– Added experimental plugin support for managing network channel encryption keys on community servers.
https://developer.valvesoftware.com/...nel_Encryption

Maps
Nuke
– Removed railing on crane in A site rafters
– Removed ability to climb up on/plant the bomb on top of silos in both bombsites
– Moved T entrance to squeaky to make movement smoother
– Removed window in Toxic, replaced with double doors
– Removed yellow bollards near Garage and Secret
– Removed cover on top of Mini
– Added some full cover in cubby next to ramp in bombsite B
– Replaced exposed bombsite silo with simple version in bombsite A
– Fixed small collision bump on ramp in ramproom where players could get stuck
– Added white, flat surface on fence at T side of yard
– Fixed various bugs listed on CSGOBugtracker.com (thanks to all contributors!)
– General optimizations