When the Original Trilogy makes its way to 4K, it will, without a doubt, be the 2011 Special Edition. However, do you think it’s possible that Disney and Lucasfilm will at least correct both the colors and sound mixes to match the theatrical presentations and sound far less compressed?
It’s going to be from an entirely newer scan of the negative, so they’ll have to redo the color-correction anyway.
As for the sound mix, your guess is as good as mine.