Valve are like master chefs: always dabbling, always sticking their fingers in the pot, making sure everything is just right. Which is why they released a big Team Fortress 2 patch today.
There are bug fixes, there are gameplay tweaks, and there are slight changes to the Spy's abilities, for whom side-stabbing has returned and who will now automatically show the primary weapon of their disguise when activated.
The full patch notes are below:
Updates to Team Fortress 2 have been released. The updates will be applied automatically when your Steam client is restarted. The specific changes include:
Gameplay changes
Added a duck timer that prevents duck spamming while running around on-ground
In-air, players are only allowed to duck once before they touch ground again
Fixed several bounding box issues with jumping, falling, and rocket jump air-walking. Bounding box should be much more accurate there now
Increased backstab check so that Spies can side-stab again
When disguising, Spies now always start showing the primary weapon in their disguise, and can then switch it with the last-disguise key
TF2 Fixes
Fixed flamethrower loophole that resulted in the flame effect being stuck on while the flamethrower wasn't really firing
Fixed exploit that allowed players to circumvent the force-fire timeout on the pipebomb launcher
Fixed a bug that caused Natasha's slow on hit effect to be inverted from 75% to 25%
Restored sawmill_logs.mdl file, fixing some user maps that used it
Fixed some localization issues with Scout achievement strings
Removed the "Final" phrasing in the map loading screen
Engine fixes
Fixed a server crash on startup under Linux
Fixed a buffer overflow issue related to network string tables
Gamestats uploading is now done asynchronously. This fixes the client timeout issues on map changes
CP_Junction
Fixed an exploit where engineers could build a teleporter exit in an invalid area
Fixed a few bad overlay assignments and other minor issues