Valve's put out a large Counter-Strike Source update into beta.
The update has gone live and the beta's already full. It features a ton of new functionality developed in collaboration with Hidden Path Studios.
Those participating are now able to get 144 new achievements, a new domination and revenge system, player stats, and more.
This beta will run for a limited, unspecified time, before going live to all Counter-Strike: Source players for free via Steam.