I haven't seen it yet, will probably see it somtime in the run-up to Christmas next weekend. I thought this quote in Ebert's review was interesting:
The Princess and the Frog :: rogerebert.com :: Reviews
It is notable that this is Disney's first animated feature since "Song of the South" (1946) to feature African-American characters, and if the studio really never is going to release that film on DVD, which seems more innocent by the day, perhaps they could have lifted "Zip-a-dee Doo-Dah" from it and plugged that song in here. Though the principal characters are all black (other than the rich man Big Daddy and the Prince, who is of undetermined ethnicity), race is not an issue because Disney adroitly sidesteps all the realities of being a poor girl in New Orleans in the early 1920s. Just as well, I suppose.