Interesting read. Looking forward to Star Citizen and Squadron 42 releases for Linux.
They planned to use Vulkan in the engine in general, but it seems that Lumberyard doesn't even support it yet (and Linux is only listed as an upcoming supported OS in Lumberyard FAQ).
Well it's way too late for them to make it in a short time.
If the drivers would just catch up...
Same here, I still have a backlog of Linux releases to play, though I'm using GOG for that. Picked up Owlboy recently.