Book-related apps saw an upsurge in launches in September
Numbers Applications released to app store
according to Flurry,
… In October, one out of every five new applications launching on the iPhone was a book, Flurry said. […” frameborder=”0″ allowfullscreen>So much so, that book-related applications overtook games in the App Store as a percentage of all released apps. The trend isn’t an aberration. In October, one out of every five new applications launching on the iPhone was a book, Flurry said.
via Gigaom “The Next Hot e-Reader: The iPhone”