Saw this a few days ago, and it's not bad... but I'd say it was designed by committee. It looks much more serious than the previous ones I've seen. I like the colors and the Impressionistic feel. It's interesting to see her other work.
I love Mary GrandPre's illustrations. You're right, it's neat to see her other work, sometimes an illustrator's other work gets forgotten when he/she is working on a high-profile project.