I was just reading over at AICN how there's a 3D re-release of Romero's Dawn of the Dead in the works. 3D Star Wars was inevitably brought up and one of the talkbackers said the following:

"Lucas is not too pleased with this new 3D process. I read that it is taking far longer than expected and is costing an absolute fortune. That being said, I think that Star Wars in 3D will be incredible, imagine the space battles at the end of Jedi....wow....I'm just not holding my breath. I still think that it'll be a few years off yet."