[noggin]

Epson's specs say:

That's the processing - not the display - bit depth though isn't it?  I     

  Not sure. From what I've read, Epson does support 4.2.2 at 12bit at maximum of 25Hz, so 23.976 and 24.000 are covered.   

Yep - my point is support is very different to display.  Accepting a 12-bit input and processing in the 12-bit domain is very different to actually fully rendering an image with 12-bit bit depth to the viewer.