Valve has patched The Orange Box on Xbox 360 to fix and tweak a few bits and bobs in Team Fortress 2.
Probably the most noticeable change is that weapons now have rumble support, but it also fixes a number of exploits, and allows for ten- and fourteen-player games.
This is the full list of changes as posted on Xbox.com:
Fixed a medic invulnerability exploit.
Fixed grenades going through players or buildings.
Fixed exploit with rockets causing damage through thin walls.
Fixed exploit allowing snipers to fire faster than intended.
Fixed exploit allowing players to teleport with the intelligence.
Fixed exploit attaching sappers to buildings through walls.
Fixed spy backstab exploit.
Fixed spy being able to attack without dropping his disguise.
Medics no longer heal enemy spies when they're not disguised.
Tweaked autobalance calculations.
When an engineer dies in sudden death, his buildings explode.
Fixed stats sometimes not reporting correctly.
Added a dialog to indicate when the host shuts down the server.
Added rumble to TF weapons.
Fixed ping column sometimes getting hidden in some resolutions.
Added 10 and 14 player game sizes.
Prevent hosts selecting game sizes above their bandwidth limits.
Improved handling of large network packets to eliminate bandwidth spikes.
Reduced respawn times for smaller games.
Next time you load the game, you should be prompted to install the update.