I've just toyed with a few shots in the computer here.
I can say that the changes will be subtle for the most part, a hybrid of OT and 2004 versions, with a few other mistakes fixed that weren't corrected in either verson.
There may be a few minor plot adjustments, to preserve some of the surprises of the OT and the flow of all 6 as a series, but nothing drastic along the lines of Balance.