Mike O said:

I know we've been over this ad nausem, but since the search function and forum setup here are so bad, I'll ask again anyway, didn't Lucas hack up the OOT negatives so badly that restoring them would take considerable effort? I'm seriously finally considering just getting the Despecialized Edition and making due. If Harmy could do it in the basement with rudimentary sources, multimillion dollar studios should be able to. But I defer to the above, I find the notion that the OOT will be anything more than a "bonus material" afterthough to be wishful thinking at this point.

Here's a site that may help answer your question: http://savestarwars.com/filmpreservation.html#ch5. It's full of lots of great information.