The article says that the book is a children's bedtime story. Now, as both a librarian, and (more importantly in this scenario) a mother, I find this hard to swallow. When my little boy goes to bed, he wants to sit on Mommy's lap and be read to by his Mommy, quietly and calmly until he gets drowsy enough to go to sleep. Although there is an option to turn the voice over off, I know that my baby will still be so amazed by the moving pictures that my voice will no doubt fade into the background and he will inevitably get bored. Not only that but it is pretty well known that television is a stimulant to children. Surely showing your child a bedtime story on what is essentially a mini-television (I know the ipad is much more than this but run with it for a minute) is just going to stimulate them rather than calmly settle them down for the night?
On a more positive note, the app truly does look amazing and there is no doubt in my mind that e-readers are the future. New technologies need to be embraced by libraries everywhere. If I could get my hands on an ipad for our library I would be one very happy lady!