Ugh. I can only imagine what other craptastic changes will be forced onto the film sound this time. Though from one perspective, it could be good that they are remixing, because the 2004 version sounds like such garbage that almost anything not completely screwed up would be a considerable improvement. But it's hard to imagine that anything resembling good taste will be exercised, considering their degenerating track record with such things.
Whatever it sounds like, though, it almost certainly will not resemble the 70mm mix in any way, alas. I would dearly hope that if they ever did see fit to restore and release the original version of the film, the 70mm would be the primary source for the audio, since it sounded so damn good to start with. But who's going to hold their breath on any of that happening?