zahrawithaz reviews The Princess and the Frog; hits the relevant issues while doing so. Good read - definitely spending my money on this instead of Avatarahontagully.
Princess Parity: Thoughts on Disney's The Princess and the Frog (spoilery of course)
ETA: And she's made a follow-up post:
Five Stories That Treat Diasporic African Religions Better Than The Princess and the Frog Did