Via [url=http://blog.counter-strike.net/index.php/2017/11/19586/]the CS:GO blog[/url]:

[quote=Valve][ Dust II ]
– Increased overall luminance 20% for all Kasbah materials and models for visibility.
– Fixed missing textures on some polygons of tarp model.
– Fixed flashbangs not blinding player through chain-link fences.
– Fixed edging around Kasbah alcove window which had shadowing artifacts.
– Adjusted penetration value for wood doors.
– Fixed wallbang values on Mechanique Generale.
– Fixed ambient lighting values at CT spawn entrance.
– Smoothed out clipping on block stack at Mid.
– Fixed some models that were embedded in the ground.
– Fixed dev text on loading screen.
– Fixed cover props at B site that would expose player feet.

[ Audio ]
– Streamlined audio settings so players have a consistent experience. Replaced HRTF and occlusion-specific settings with an option to disable 3D audio effects, to allow compatibility for players who have conflicting audio processing occurring on their audio hardware.
– Added a voice_player_volume console command which can be used to adjust voice volume on a per-player basis.

[ GAMEPLAY ]
– removed holiday cheer.[/quote]

Rumor has it:

- Valve keeps swapping Dust 2's thumbnail in favor of a new one. Are we gonna have to have a vote to decide which to settle on? https://github.com/SteamDatabase/GameTracking-CSGO/commit/2b6bdc45b8abd538cba6dd21b5d30117d4c5ad31

- [s][b]Hurry! This [s]is[/s] [url=https://twitter.com/csgo_dev/status/926149391060123648]will probably be[/url] your LAST chance to get a Hydra pass at 50% off before it goes off sale![/b][/s] If you're reading this by now (which is about 12 AM CST), Hydra passes are now off sale, and can no longer be bought in game

- Size is ~80 MB