Update: To be clear, they did not actually mean Deus Ex was going Vulkan. They misspoke a bit during the livestream and they aren't saying what game it will be yet.
Note: Article updated to be clearer, with the actual quote of what they said.
I didn't expect this so soon, but it looks like early next year we may have a Linux port from Feral Interactive that uses Vulkan.
Linux gamers! We just announced, live on Twitch, that we are looking towards Vulkan implementation in the first half of next year.— Feral Interactive (@feralgames) October 27, 2016
They confirmed during the livestream that Deus Ex: Mankind Divided will use OpenGL on Linux, but they also said:
QuoteWe can confirm that Deus Ex: Mankind Divided on Linux is using OpenGL, and we're very happy to announce that we are looking towards Vulkan implementation in the first half of next year.
So, while we are getting OpenGL for now, the possibility of Vulkan so soon is fun news.
Just remember though, Vulkan won't automatically gives us better performance. Like OpenGL it does depend on how it's used, how the original engine was designed and so on.
It will be interesting to see if Vulkan is added into any of their previous games, to see what difference it makes there. Could make for some fun benchmarking.