So, this is a long topic, most of it not very informative. I'm not even sure reading it all would help me have a correct idea of where things stand. What I understand of it: (Ill call DOS and DOS:EE the respective versions of the game) - there will be no DOS for linux - there will be DOS:EE for linux
DOS:EE on Windows has requirements bumped from DX9 to DX11. I don't know what this means on windows (having not used windows for many years) and I have no dea how this translates on linux which uses OGL.