Nope. This card is not yet supported. Nothing you can do.
This card should work fine for the OpenGL features in After Effects.
It's just the CUDA acceleration of the ray-traced 3D renderer that won't work---and you probably don't care about that anyway, since that is a very limited, seldom useful, and essentially obsolete feature; there are better ways to work with 3D in After Effects, such as using Cinema 4D with After Effects.
details of GPU usage in After Effects:
Thank you for your answer!
One more quick question:
Are there any known plans for incorporating the new GTX 9xx cards for ray traced rendering in the future?
No. There will be no further development in the ray-traced 3D renderer.