Half-Life 2: Deathmatch and SDK Released!
 

Half-Life 2: Deathmatch
New multiplayer game featuring physics simulation system

Half-Life 2/Source SDK
Includes game code needed to create Half-Life 2/Source MODs
Ability to edit Half-Life 2 maps
Maya model exporter
3d Studio Max model exporter source code
Sample MOD with vehicles


Source Updates
HTTP and non-HTTP map auto downloading functionality
Enhanced dedicated server logging capabilities
Various tweaks and fixes


*Also: A Half-Life 2: Deathmatch Map Making Contest has been announced. The winning entry will receive a cash prize of $5,000. Two runner up entries will receive a cash prize of $3,000.

http://www.steampowered.com/index.php?area=news