Updates for Counter-Strike: Source, Day of Defeat: Source, Half-Life Deathmatch: Source, Half-Life 2: Deathmatch, and the Source SDK 2013 Base have been released. The updates will be applied automatically when you restart the game. The major changes include:

• Improved Steam Voice support
  • Removed sv_use_steam_voice convar. Steam voice is now selected via "sv_voicecodec steam"
  • Fixed demos not properly recording Steam Voice status, resulting in potential corrupt voice in demos with differing default settings
  • Will now use the native Steam Voice sampling rate, instead of clamping to 11kHz
  • Improved compatibility with Steam client beta
• Added CELT audio codec currently in use in TF2 and CS:GO
  • Server operators may enable use of this codec via "sv_voicecodec vaudio_celt"
  • Steam voice remains the default voice codec in all SDK2013 games
• Updated spec_player command to match recent improvements in TF2
  • Now accepts partial player names, Steam IDs, etc.
• Fixed security issue reported by Amat Cama via GeekPwn
• Fixed security issues reported by Justin Taft from One Up Security, LLC
• Updated engine with recent stability and bug fixes from TF2
• Updated handling of game language setting to match Team Fortress 2 behavior:
  • Steam per-game language setting is now properly honored and syncs with the in-game setting
  • In-game UI language now honors above language setting, rather than improperly using the Steam client's UI language setting
    • Users wishing to have separate UI and audio languages may pass -audiolanguage on the command line
• Updated the localization files
• [DoD:S] Updated custom loading error dialog to include numerous tweaks and fixes that have previously been applied to the base version