From the patch notes (Wiki coverage):
- Added a promotional item Circular Circlesaw for Ricochet 2
- Added native Linux client binaries
- Hats that do not contain the "face" equip region now show up on friendly disguised Spies.
- ملفات الترجمة المحدثة (Arabic for "Updated localization files")
- Added the Heartwarming Headache
- Added materials for the Crocketeer's Cloak
- Added materials for the Ricochest
- The removed ladders from the map Gullywash were added again.
- Added strings related to a Demopan item set ("The Demopan" and "+150% chance to get 2 Refined for a Stout Shako.")