Via the Steam store:
Valve- Added UGC Highlander Season 19/Season 20, UGC 6vs6 Season 21/Season 22, and UGC 4vs4 Season 8/Season 9 tournament medals
- Added Gamers Assembly 2017 tournament medals
Rumor has it:
- Although the Steam store post claims "The update will be applied automatically when you restart Team Fortress 2.", it's just an item schema update (which can be seen here), so there won't be anything to download
Via [url=http://store.steampowered.com/news/28537/]the Steam store[/url]:
[quote=Valve]- Added UGC Highlander Season 19/Season 20, UGC 6vs6 Season 21/Season 22, and UGC 4vs4 Season 8/Season 9 tournament medals
- Added Gamers Assembly 2017 tournament medals[/quote]
Rumor has it:
- Although the Steam store post claims "The update will be applied automatically when you restart Team Fortress 2.", it's just an item schema update ([url=http://git.optf2.com/schema-tracking/commit/?h=teamfortress2&id=2d22a9032f9091f2c805c543532fdaef35b32384]which can be seen here[/url]), so there won't be anything to download