Hello, does Mountain Lion support 10-bit video?

I work with high-fidelity digital photography and drive an Eizo display through mini-displayport. I am running on a late 2009 MacPro with dual quad cores and 16GB memory with standard video card. I am look to see if I can get 10bit video instead of 8 bit video.

Alternatively, Does anyone know if "Mavericks" support 10 bit when it is released?

Thank you,

George Pappas