Today Valve has released a muted version of the Source Engine 2 for the porting of your Dota 2, although no official way and with different tool still missing, with lots of developer tools and the mod community. The news is not all that relevant to our site except within the code of the engine there are references both to Left 4 Dead 3, which would thus be in the works for a long time and probably will soon be announced, but also elements of Dota 2, GUI related to dedicated servers and sound files and expressly categorized under Xbox. What's in a pan for Valve, now in silence by too long?