And actually the same can be said at the 50 inch version.The good news is that they are going to be showing new 4K monitors at CES.
The bad news is that their old monitor is class-action lawsuit material.
It does not have a motion interpolation feature (like the 55inch version). Nor does it have 1080p at 120hz as an official resolution option.
You can only run it at 120hz with a video card that supports custom resolutions. Barring that, it's not possible to make use of 120hz.