As promised, the new beta 6.6 Windows release of Counter-Strike is now available on the Counter-Strike downloads page. There is a 2.1 MB upgrade patch if you're already at version 6.5, as well as a full 6.6 install of 57.3 MB. Here is the list of new features and changes sent along by Valve's Doug Lombardi:

Details of the update:
- New command added: "Timeleft"
- Fixed stalled connection bug
- New sniper crosshair
- Fixes "laggy rifle firing"
- Fixes many cheats
- Updated cs_estate