It says everywhere that you get directx 11.2 with Windows 8.1, but I don't even have 11.1, just 11, even though I have 8.1? I found this by going to "run" and using the dxdiag (directx diagnostics tool).
When DXDIAG shows "DX11" they don't mean you don't support DX11.1 or DX11.2. When there is software that finally makes use of DX11.2 it will work just fine.