I haven't seen it yet, but the reviews for the first part of Storybook Circus (rethemed Barnstormer, train station, and half of Dumbo) have been positive. They put in a lot of detail.
Beauty and the Beast, Little Mermaid, and a majority of Storybook Circus should be open by the end of the year. The Seven Dwarfs Mine Train still has until 2014.