24 fps has been the standard for films, even though humans can perceive the flicker. (It's supposed to give it a special feel or whatever.) With 3d you end up with an effective 12 fps, unless you bump up the technical frame rate. So are they saying it will be effectively be 48 fps in 3d, requiring the theaters to buy 96 fps equipment? Cause I can definitely see that being a problem.
On a more subjective level, I wonder if we really want to go down the road of computer monitors, tvs, and movie screens all pretty much looking the same; while originally movies were limited by technology to 24 fps, we've probably had the technology to set it around 60 (where the human eye stops being able to perceive the flicker) for decades.