- The Backbiter's Billycock was added to the game.
- This hat was made paintable.
- [Undocumented] Added a community-contributed description for this hat.
- [Undocumented] This hat can now be uncrated with Unusual quality.
- Paint affects this hat's color more, colors are less washed out.
- This hat's painting texture was improved.
- The backpack icon shows this hat as being grey, but it is team-colored unless painted.
- A backbiter is a person who says nasty things about others, referencing the Spy's tendency to badmouth opponents, as well as his penchant for backstabbing.