6 May 2010 Team Fortress 2 Update Released
Updates to Team Fortress 2 have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Team Fortress 2
Mann Co. badges updated
Added new "Primeval Warrior" employee badge
Moved badges start date to the official TF2 release date of October 10th, 2007
Gave "Primeval Warrior" badge to anyone who played in the TF2 Beta prior to the official release
Adjusted existing badges based on the new start date
Fixed player avatars being squashed in the Arena win panel
Fixed a client crash caused by players calling for a Medic
Fixed a server crash caused by receiving invalid data in player commands
Fixed wearables attached to ragdolls not setting their skins and bodygoups correctly
Fixed deflected remote-detonate pipebombs becoming mini-crits when detonated
Fixed deflected remote-detonate pipebombs becoming full crits if the Pyro is critboosted
Prevented custom models from showing domination particles in PropHunt