Via [url=https://steamcommunity.com/games/TF2/announcements/detail/6124418777151888719]the Steam Community[/url]:

[quote=Valve]- Fixed regression with some .mp3 files not playing
- Updated description for the Backpack Expander
- Updated some tournament medals

- Updated the Desk Engineer cosmetic item
- Fixed clipping with the Gunslinger
- Fixed clipping with Engineer's buckle
- Fixed rotation in the paint preview
- Fixed skin parts being tinted green from texture compression

- Updated the Daring Dell cosmetic item
- Fixed rotation in the paint preview
- Fixed shading artifacts on the helmet

- Updated The Big Star cosmetic item
- Fixed rotation in the paint preview
- Fixed various instances of clipping with the player model
- Updated mismatched backpack icon
- Fixed parts of the textures

- Updated koth_cachoeira
- Players can no longer shoot through the metal fence[/quote]

Rumor has it:

- Size is close to 25 MB