It was a collaboration with the makers of Alice for the iPad and the team at Smashing Ideas and is published by Random House Digital, inc.
There are lots of illustrations in the book, but here are a few for you to see. They are all interactive with sound-scapes and sound effects and there is a top notch voice recording of the abridged storybook version. The pages with blank areas are where story text appears in the book. It pretty fantastic, but I may be biased. You can also see concept art for it here.