I have seen very recent posts indicating that she may be a replacement for Jasmine at Cinderella's Royal Table.
To wit, this is not a Confirmed change, but merely a sighting on a particular day since CRT reopened after a refurbishment.
Frankly, makes sense to me - we are using a FP+ to meet Rapunzel for the first time with our daughter. And believe me, our child does not give up thrill rides very easily. Only wish I had an ADR for CRT instead of BoG if I knew Rapunzel would be there.