Interesting theory. It meshes nicely with the UI paradigm, doesn't devalue native apps, and would open an avenue of development a notch above web-apps. Quite plausible.<p>On iBooks being missing from promo shots: this is because is not included on the device. Quoth Apple's "Features" page: <i>Download the free app from the App Store and buy everything from classics to best sellers from the built-in iBookstore.</i> This is apparently because they've only made deals to sell the content in the U.S.