Eizo has given out procedures that document the ability to get a continuous 10-bit output from Photoshop through to their displays. It has taken several years for the various hardware and software players to develop this capability. The last link in the chain has been the graphics card manufacturers, but it looks like there are a few graphics cards that can now support 10-bit color - on Mac and Windows.
We've started to hear reports around the industry that people are actually making this work.
I would not rush out and change your whole workflow over to this just yet. You know what they say about the cutting edge of technology often becoming the bleeding edge. Just the same, it's nice to see that we can do this now.