According to CS-Nation, the first public beta of CS: Source Deathmatch has been released. Here’s some information about this mod:

CS:S Deathmatch is a SourceMM plugin that adds deathmatch style gameplay to Counter-Strike: Source. It has the following features:

• Randomized, preset spawning (you can add new spawn points)
  
• Spawn protection (configurable by time and player rendering)
  
• Support for giving bots random weapons
  
• Configurable weapon menus
  
• Blocking of round restarts
  
• Deletion of old weapons and rag dolls (saves FPS!)
  
• Weapons can be blocked
  
• Grenades/armor are configurable

CS: Source Deathmatch Site: http://www.tcwonline.org/~dvander/cssdm/

News Source: Official Counter-Strike Website

RC 9 of HLstatsX has been released (thanks CSBanana). Big new features include implementation of the battlesmod, enhancement of the Google maps player location feature, and many bug fixes. Full details are available at the HLstatsX website, including a download link.

HLstatsX Website: http://hlstatsx.com/

News Source: Official Counter-Strike Website

Whisper's Basic War Strats, a guide to "basic Counterstrike war strats and tactics," has been updated (thanks CS-Evolution). Here is a description of the guide:

This guide is meant to explain many of the common mistakes new and even experienced clans make, which can affect the outcomes of wars you play in, usually in the negative if you do not heed this advice. It also explains some basic buying strategies so clan leaders can call for something specific and after studying this guide, everybody will know what they are talking about. For the most part you require no skill whatsoever to execute the advice offered here, only a modicum of intelligence and concentration.

Whisper's Basic War Strats Site: http://whisper.ausgamers.com/warstrats.htm

News Source: Official Counter-Strike Site

Updates to the Steam Client and the Half-Life 1: Engine have been released. The updates will be applied automatically when your Steam client is restarted. The specific changes include:

Steam Client

• Fixed client failing to login to the Steam Authentication servers on machines with multiple network interfaces

Half-Life 1: Engine

• Fixed game servers failing to connect to VAC servers on machines with multiple network interfaces
  
• Fixed "-sport" parameter being ignored
  
• Implemented a client cvar value querying API (to replace the alias method various 3rd party tools were using). Servers can call enginefuncs_t::pfnQueryClientCvarValue() and will get a callback for that cvar value via NEW_DLL_FUNCTIONS::pfnCvarValue().
  
• Fixed RCON failing when you were not connected to the server itself

News Source: Steam News

Updates to Counter-Strike: Source, Half-Life: Source and the Source Engine have been released. The updates will be applied automatically when your Steam client is restarted. The specific changes include:

Counter-Strike: Source

• Added validation of custom player model and weapon materials. Custom materials must be VertexLitGeneric with only $baseTexture and $bumpmap variables defined

Source Engine

• Fixed "not logged in" error not displaying properly
  
• Fixed not being able to run internet game servers for Source Mods in a debugger

Half-Life: Source

• Enabled low violence content for low violence users

News Source: Steam News

Updates to the Steam Client have been released. The updates will be applied automatically when your Steam client is restarted. The specific changes include:

Steam

• We're refreshing the survey data again. The results will be tallied over at http://www.steampowered.com/status/survey.html
  
• Fixed favorites list not refreshing on startup
  
• Fixed Counter-Strike: Source servers showing up in Counter-Strike list on startup

News Source: Steam News

Updates to Counter-Strike and the Half-Life 1: Engine have been released. The updates will be applied automatically when your Steam client is restarted. The specific changes include:

Half-Life 1: Engine

• Servers will default to starting up using VAC2
  
• Added "sv_uploadmax" cvar to limit the max size (in MB) a client can use for a custom resource (i.e spray decals)
  
• Added "-sport" command line option to allow you to specify the VAC2 port the server should use
  
• Don't allow servers to execute "alias" commands on clients (prevents an infinite loop exploit using alias commands from servers)
  
• Fixed S2C_CONNREJECT packet exploit causing the game to quit from any currently connected game server (found by Gavin Cotter)
  
• Fixed crash exploit caused by specially crafted packet triggering a crash in the resource upload code (found by Gavin Cotter)
  
• Fixed infinite loop in richtext/textentry control caused by large sets of spaces between words wrapping around line ends (found by Kristian Hermansen)
  
• Fixed possible lockup when refreshing a login ticket
  
• Disabled old style server queries by default.

Counter-Strike

• Fixed menu exploit on join that spawned you into the server but moved you around as you were in spectator mode

News Source: Steam News

Updates to Counter-Strike: Source and the Source Engine have been released. The updates will be applied automatically when your Steam client is restarted. The specific changes include:

Source Engine

• Fixed prediction errors on the client when navigating
  
• Fixed bug where server sent updates slower than specified in cl_updaterate
  
• Fixed prediction errors when cl_updaterate is a large number
  
• People who turned off cl_smooth should re-enable it after this release.
  
• Fixed a rare crash in physics
  
• Option -heapsize now works correctly on machines with more than 4GB of memory

Counter-Strike: Source

• Fixed exploit with demo recording clearing flashbang and smoke effects
  
• Fixed minor exploit allowing thirdperson even if cheats were disabled on the server
  
• Fixed bug allowing movement at run speeds while ducked

News Source: Steam News