Jacobss said:

There are also some sad things:

Q: Was there any thought given to archiving previous tracks like the 6-track master from the 70mm prints or the 78 mono remix? Any thought given to putting them on the Blu-ray?

A: Yes, we have those and they’ve all been digitized. I don’t know if they considered putting those on the Blu-ray. That might be more of a question for Marketing, it may be an issue of space. It’s funny because I play those other audio tracks, like the scene when R2 and C3PO have been left on Tatooine and they walk through the canyon. I just love that on the current mix, you can actually hear the quiet, when R2 is lonely, going through the canyon. I played the original mix and it’s FULL of hiss and totally brittle, so it’s fun now to hear it like George wanted it to really be, what was intended.

So they have the restored 1977 70mm sound. Now all we need is that they scan the original elements from the negative, incorporate them into SE negative and release it on BD with lossless sound. Sadly, this will probably never happen.

I figure they'll do the OT-release eventually, and the original sound is for that.