There is a lot of excited and analytic commentary floating around about the Apple iBook Author thing.
My friend and argument partner Mark from Axis 12 in London said we should have a press release: "When asked if he thought the recent release of ibook author threatened the viability of his flagship product, Mr Pipe, CEO of Infogrid Pacific and the company behind IGP:Digital Publisher replied, "It's very pretty."
After digesting the crazy license and serious limitations for any type of education content and the serious blog statements about IP, I am reasonably sure it is going to be highly successful in the Apple controlled content ecosystem. It's difficult to beat frenzy, greed and myopia!