Ok, so here is the updated information:
Blue section is the same as it has always been.
The prime viewing locations in the dining and preferred dining sections are now reserved for Carthay Circle. Please note that this doesn't mean that if you dine at Carthay Circle you will be stuck here if the view would be bad and you arrive at least 15 minutes early. Carthay Circle seems to have the benefit of being able to put their guests wherever they will get the best view and that meets their individual needs, i.e., you have someone in a wheelchair or you can't stand for a long period of time or you have a child that can't see over the people in front of you, they will do everything that they can to accomodate you. Please note that this is based on personal experience only, as we had a person in a wheelchair and two that couldn't stand for the length of the show. They were even going to add an additional bench if nothing else could be worked out (my guess is they would have put us in the VIP area before that happened, but they found us a spot is what is truly one of the best bench areas in our opinion).
You do have to show up 15 minutes prior to the show to be accommodated though, but not any earlier than that.
The old Yellow section has now been incorporated into the dining sections. The exception to this is the old Yellow Section Benches and Wheelchair seating and directly in front of it is still part of the Yellow Section, not the dining section.
The old Red section is now the Yellow section.
For the second show, it appears that all lining up occurs at Wine Country Trattoria, either in the picnic area, for those who need assistance or across the bridge for everyone else.