SilverWook said:

If this 4K thing catches on, the Blu Ray masters aren't going to cut the mustard. They'd have to to go back to a film master, and that leaves the '97 versions and the OOT.

I doubt the Mouse nor Fox are going to let the 40th anniversary in 2017 go unexploited.

The Lowry master doesn't even cut the mustard right now in terms of a theatrical re-release. All of the digital projectors installed in theaters right now are at least full 2K res (2048 by 1080). Lowry only did the 2004 job with hdtv in mind. The projectors in theaters at the time were 1280 by 1024, I believe, with an anamorphic lens to unsqueeze the image to its full ratio (someone please correct me if I'm wrong, I'm not so sure about that).

So, whether 4K tv catches on or not, the current digital master shouldn't be used with anything but a blu-ray reissue in mind.