A update for Team Fortress 2 released on December 11, 2008 contains some significant game play changes:
* The Engineer's teleporters can now be upgraded to level three. It will recharge faster the higher level it is
* The Engineer's dispensers can now be upgraded to level three. It will give out metal and heal faster as it is upgraded
* Spies will be able to recharge their cloaking ability by picking up ammo off of the ground or from health cabinets
* Some changes to the second part of the first stage of Goldrush to give the attackers more of an advantage
* Any weapons that fire bullets (shotguns, sniper's machine gun, heavy's minigun, etc.) can now break apart the Demoman's stickybombs
* The icon on the HUD for a person calling for Medic will now give more information to the medic (if the target is low on health, on fire, etc.)
* Added an achievement tracker that will allow people to choose specific achievements that they are trying to get
* There is now a custom icon for death messages when the player was killed from a critical hit
* Added a new particle effect for when a player enters the water
* Added smoke to the feet of a rocket jumping soldier
* Players will now have some particles swirling around them so other players can see when they are overhealed
XBox 360 owners can expect the same gameplay enhancements in the future.
