[url="http://developer.valvesoftware.com/wiki/Source_SDK_Release_Notes"]Valve have released a beta update to the Source SDK[/url], including: [b][u]Enhancements[/b][/u] [b]SDK Launcher[/b] [list] [*]There is now a drop list that allows the user to switch between engine versions. No need to specify engine version as a launch option. [/list] [b]SDK Source Code[/b] [list] [*]Modders can now create single player and multi-player mods based in the HL2:Episode Two source code when the engine version is set to The Orange Box. [*]It is still possible to create mods based on HL2:Episode One using the legacy version of the Source Engine. [/list] [b]Faceposer[/b] [list] [*]New menu option allows the user to build a scenes.image file. This allows users to add custom scenes to Orange Box games. [/list] [b]Hammer[/b] [list] [*]Two new lighting preview modes are available. 'Note:' 3D Ray-traced Lighting Preview can cause Hammer to run slowly for complicated maps. [/list] [b][u]Bug fixes[/b][/u] [b]Hammer[/b] [list] [*]Fixed crashes that began as a result of a Source Engine update the week of 1/7. [/list] [b]SDK Launcher[/b] [list] [*]The %VProject% env var is again being dynamically set when you change the current mod in the SDK launcher. [/list] [b]Content Creation Utilities[/b] [list] [*]There is no longer a need to add -nop4 to the command lines of studiomdl and vtex. [/list] [b][u]Current Known Issues[/b][/u] [list] [*]Cannot create shortcuts to Hammer, Faceposer, and Model Viewer. [*]Linux makefiles shipped with the SDK are incomplete and will be updated in the next release. [*]The Particle Editor is not presently included in the Source SDK. Updated SDK shaders are not presently included in the Source SDK. [/list] To access it, add [i][u]-beta srcsdk0122[/u][/i] to the shortcut you use to launch Steam.