I'm honestly hoping they don't release all the 3D versions of the OT before Episode 7, and I'd be surprised if they did. Episode 2 and 3 in 3D being right next to each other isn't surprising since both have so much digital elements that are already seperate, especially 3. just think how amazing the opening battle will bein 3D, regardless of it being not so great in almost every other factor. But for the OT, they don't have many digital, or atleast seperate, elements. They have to convert lots from scratch. (wondering if they'll apply DNR to the footage...) Having them speed up the process would be horrible to the 3D experience.
Anyhow, I still hope they are planning to rerelease the originals. I so badly want to see these movies in the theatres as I missed out previous chances.