Updates to Team Fortress 2 and Day of Defeat: Source have been released. The updates will be applied automatically when your Steam client is restarted.
Some of the changes include;
Source Engine
* Fixed client "timeout on mapchange" problem
* Fixed setinfo exploit
* Marked the r_aspectratio ConVar as a cheat
Server Browser
* Renamed "Quick List" to "Map List"
* Removed minimum ping filter from Map List
Find the full list, including game specific changes at the source.