Ashes of the Singularity: Escalation [GOG, Steam] recently gained Vulkan support in the 2.4 update along with tons of other new stuff. The interesting thing is that Linux is mentioned once again.
In this Steam post talking about Vulkan, see this bit:
QuoteThe Vulkan version also paves the way for a future Linux version. Getting Vulkan is a big step in making Ashes of the Singularity available on more platforms.
Considering that was posted only ~2 hours ago, it's a damn good sign that it's being considered.
I'm really looking forward to it, as it's exactly the type of strategy game I love and it would be pretty incredible to have such a title native on Linux.
Considering their roadmap and the fact that Vulkan support in Ashes is still a work in progress, it may be quite some time until they're even ready to publicly say a Linux version is actually coming.
About the game
QuotePlay as the Post Human Coalition or their eternal foes the Substrate and battle for control of the galaxy. Experience maps of unprecedented size and detail with the unparalleled power of the world’s first native 64-bit RTS engine, Nitrous.
Enjoy the game online with friends in ranked or unranked multiplayer mode or play it by yourself against a powerful non-cheating AI in skirmish or campaign mode. No matter what mode you play, strategy is the key: deciding what technologies to research, where to send your armies, how to manage your economy, and what units to construct are crucial to victory.
Experience a massive-scale real time strategy game where you wage war across worlds with thousands of units. The conflict has escalated, and it’s time to choose a side.