I know that this is an optional extension but Nvidia has DX11 OCL interop so I hope cl_khr_dx11 interop would be in AMD OCL 1.2 drivers..
Are you working on exposing it?
It is standard policy to not discuss features that might or might not be in the process of being worked on until they are released.
Is Direct3D9 interop already implemented? If not, please consider it, it's needed for video playback, cause DXVA/MediaFoundation are still based on D3D9.