Jackson is currently hard at work shooting The Hobbit in 3D. But instead of using the bulky 3D rigs commonly associated with 3D movie films. Jackson is using RED EPIC cameras and mirrors to keep the cameras mobile.
Most "3D" films are crap. Sure Avatar looked good, but the story was lammmeee. Hollywood has gotten in the habit of ham-fisting 3D into even crappier films during post-production to squeeze a few extra bucks out of movie goers. Also lame. The Hobbit—an amazing story—has been developed as a 3D film from day one. Even the hand-drawn concept art is 3D. And thanks to the 48 RED EPIC cameras shooting 5K at 48FPS, the movie should look outstanding.