Beyond the main text, authors can also arrange glossaries by highlighting and clicking words, and clicking again to add a definition. In a surprise move, Apple also said authors can publish straight to the store, though i’m waiting for clarification that textbook writers and other scribes are actually exempt from Apple’s notorious approval process. In any case, the app is available now in the App Store (for OS X Lion users only, sadly) so you can crack on.
Apple has also confirmed some key approval and revenue-sharing details. First, authors will be subject to the same App Store approval process as developers. Writers can offer their books for free, or for as much as 14.99 (the same price cap for textbooks sold in the store). And like developers, authors must agree to a 70/30 revenue split, with writers pocketing 70 percent after Apple takes its share.