Article taken from GamingOnLinux.com.

In a very unsurprising move, new slides out of SIGGRAPH 2015 from Valve talk about Source 2 and Vulkan. The game featured is of course Dota 2 Reborn. Since it's Valve's most popular game, and their first game to use Source 2 it was to be expected.It will probably be the first game on Linux to use Vulkan, so it will be very, very interesting to see how it performs against the OpenGL version. I really hope Valve have a setting we can change easily to switch between the two, as it will make comparisons easier, and not all drivers will support Vulkan at the same time.I haven't been able to find the video that goes along with it, as it seems it's still sadly being hidden.You can find the slides here if interested in developer stuff.