Via the CS:GO blog:
Valve[GRAPHICS]
– Visually upgraded all first-person arm, hands and glove models.
[KILLER REPLAY]
– Fixed a bug where client could sometimes get stuck in Killer Replay with a black screen.
– Fixed a bug where victim weapons could sometimes be invisible in Killer Replay.
– Player’s own footstep sounds are now correctly mixed as third-person footsteps during Killer Replay.
– Voice communications are now not faded out before and after Killer Replay.
[SOUND]
– Reduced volume falloff distance for USP-S.
– Removed high frequencies from Killer Replay tape sound.
– Adjusted falloff curve of ricochet and impact sounds.
– Minor mix tweaks.
[MATCHMAKING]
– Added official game servers in India.
[LINUX]
– Upgraded to newer version of libSDL.
– Improved game performance during the end of match scoreboard.
– Sound options now distinguish between headphones vs two-speakers options.
[MISC]
– Added support for in-game broadcast of Regional Minor Championships.
Rumor has it:
- String additions, and plenty of script changes: https://github.com/SteamDatabase/GameTracking/commit/ece10954374ca6a6394170e1f156b2627ea0ad87
- GC protobufs and some more script changes: https://github.com/SteamDatabase/GameTracking/commit/6582a20a85e7ec84bd3ba6e5ffe5d5237b22a2d2
- Size is ~55 MB