The files will also have backward compatibility to EPUB 2 for readers using older devices. HarperCollins worked with RSI Content Solutions on the implementation. RSI is sharing the process with the DITA for Publishers open source community, so that other publishers can use the new format.
“Implementing EPUB 3 enables us to support industry standards while increasing accessibility for the disabled community,” stated Leslie Hulse, VP of business development at HarperCollins. “We look forward to the enhanced benefits this new format will provide readers.”