From what I have read that 3D/HDTV's are not selling well, and I honestly think it is a fad in theaters right now and will be an afterthought in 5-10 years.
I don't blame the movie studios for trying to increase revenue anyway they can, because they are essentially a business that looks at its bottom line. But this is masking a larger problem in the industry that movies overall just aren't as good as they were 10-20 years ago and they have to try anything get people in the theaters.