When Apple released the iPad, I kept expecting them to come out with some way of authoring digital books (other than the ePub format supported by iBooks.) I thought they might create something like iWeb, but for creating interactive content.
Well, nothing so far, but a small company created by some ex-Apple employees has come up with something.
Push Pop Press describes themselves as a publishing platform. Little information is available about the authoring tools, or what they'll charge for them, but they do have an actual title out; Al Gore's Our Choice.
The choice of book is interesting not because of the subject matter, but because Al Gore is on Apple's board.
You can see a demo of the book in this TED talk:
Push Pop Press TED Talk from Push Pop Press on Vimeo.
UPDATE: I played with the app and have written about it here.