Among many changes, this beta update allows shaders to be compiled for the Orange Box, fixes various command line tools, and adds a new 'template mod' with lots of common teamplay features that aren't part of the old HL2 Deathmatch source pre-written.
Access the beta through Steam's settings page.
Awesome! Finally custom shaders on the Orange Box engine!
WOW AWESOME looks like a big update for the source SDK we now can make special things with SHADERS!!!
"Added the ability to edit game configurations with vconfig" Finally, they got that tool working again, I knew they would eventually