I think they may do a 'paint' job on this to get past the censorship. In
Peter Pan, they changed the hues of the Indian Chief so that he wasn't as red (ridiculous, I know) and that was one of the early Lowry restorations too for the Platinum line. The only problem with doing this though is that the centurette has other body features that are stereotyped, so it's really up in the air.
In my opinion, I think they'll retain the original look of the scenes without zooming simply because the Diamond Edition line is supposed to be 'the best of the best' in terms of restoration and original presentation. Either way, during the restoration Lowry will have been able to look at the scenes in lots of detail
To me, the main problem with censorship is that people are willing to make the most fuss over the visual context of racism from production, and much less over other features of Disney films such as lyrics. There are so many examples of crude lyrics within these films, but they rarely get mentioned. If censorship aims for equality, then someone is doing a very poor job...
Lets just hope Disney release Fantasia uncut. Let by-gones be by-gones and accept that the state of mind back in the late 1930's/40's was very, very different to now, and to be thankful we live in a much fairer society.
After all, how are we ever going to accept this when the evidence is just so obviously swept under the carpet?