EPUB3 Still Not Ready for the Prime Time

“Almost every publisher we talked to expressed reservations about getting involved in the next generation of the EPUB3 ebook format. If you are unfamiliar with this format, it borrows heavy elements from HTML5, and allows for audio, video, and the ability to change the language on the fly. It is certainly appealing on a fundamental level for anyone wanting to do interactive content, kids books, cook books, and other media-centric activities. The main problem is none of the best features are standardized yet and the format is likely to never be fully completed.”