It’s also important to note that we finished DirectX 11 alpha testing and the main bulk of debugging work required for this transition and we plan to start implementing the already prepared and tested changes into the main game branch immediately after the version 2.005 release. Therefore, if all goes well, we hope to release version 2.006 in December with DirectX 11 support included. There is a chance that unforeseen issues could postpone DX11 launch, but so far, everything goes according to plan and we hope that nothing will interfere with it. At launch, there will be no real visible difference in the graphical appearance of the product. Any possible future improvements to scene rendering or special effects will have to come later after further research and experimentation. Our most important goal for DX11 was to improve performance of our current scene rendering and support for VR development
Interesting for many reasons, especially VR people. This sim might not be to taxing for the Rift graphics.
For full story - http://forum.il2sturmovik.com/topic/168-developer-diary/page-4#entry408276