The thing is DOS vanilla doesn't need dx11, and I really doubt they have recoded everything from scratch.
Yea, they pretty much upgraded the game engine to dx11 support. You can run the original game but not the EE with < than d3d11 support but > than d3d8 support. (If you had a d3d8-hardware card you would not be able to run the original game or the EE.) It's difficult to see the problem as you can buy nice d3d12 cards with ~2x the power of the PS4 for ~$200 (R9 380 4GB, for instance)...and that card will let you play every game ever written as well as the d3d12 games coming up for release. D3d12 will be with us for a long time--possibly longer than d3d9. It's the price of progress. D3d 9/10 games have been around since 2001, maybe a bit earlier. D3d9 has been frozen since d3d9.0c, supported by ATi/AMD since 2001, IIRC. If you are interested in newer games getting a new card is required. Don't kid yourself about that.
