I didn't see any thread regarding this. I was a bit puzzeled when it said "Play in DirectX 9.0".
Found out you have to go into the "CONFIG" tab, and enable it from there.
http://puu.sh/itPKq/0f135a1716.jpg
Should show "Play DirectX 11" after, assuming your PC can handle it.
http://puu.sh/itPMt/a537c1fe2b.jpg
