This thread is for any game updates released and hopefully is a 'one stop shop for game updates'. Obviously we can't cover every game in existence but if we have missed something then please feel free to post the update here.
Global Agenda - Update via Steam
Mount & Blade: Warband - Link Removed - Invalid URL
Steam Client - Update via Steam
Team Fortress 2 - Update via Steam
X3: Terran Conflict - Link Removed - Invalid URL
Left 4 Dead 2 - Update via Steam
Napoleon: Total War - Update via Steam
Pro Cycling Manager: Tour De France 2010 - Link Removed - Invalid URL
Serious Sam HD: The Second Encounter - Update via Steam