Via [url=https://steamcommunity.com/games/CSGO/announcements/detail/3747614808339498555]the Steam Community[/url]:

[quote=Valve][ SOUND ]
- Fixed missing win/loss/MVP music in Casual

[ GRAPHICS ]
- Put range clamps on r_fullscreen_gamma, r_texture_stream_max_resolution, and r_character_decal_resolution
- Fixed smokes not rendering correctly on AMD GPUs on Linux

[ ANIMATION ]
- Adjusted grenade throw animations to reduce view obstruction
- Fixed a case where players would float a few inches off the ground after spawning

[ MAPS ]
- Various bug fixes and tweaks to Mirage and Overpass

[ COSMETICS ]
- Various bug fixes and tweaks to weapon finishes and stickers
- Updated Phoenix Soldier balaclava from green to original red color
- Fixed missing pouches on certain SWAT agents

[ MISC ]
- Fixed a bug where loadout shuffle would never happen
- Increased clickable area of sellback buttons in buy menu
- Fixed a case where the death panel would stay on-screen after respawning quickly
- Disabled CSTV and demo recording temporarily to increase server availability so more people can play[/quote]

Rumor has it:

- Size is ~550 MB (with Workshop Tools installed) - data capped users should be aware