The start of closed beta, previously delayed, has been announced for Counter-Strike: GO.

After a delay that left a start date up in the air, the new beta launch date for Counter-Strike: Global Offensive has been announced. Players can get into the game starting November 30th. All existing beta keys that have been distributed will work for this beta phase

http://store.steampowered.com/video/1800?snr=1_41_4__42