Read A Powerful Partnership Brings Open Annotation to EPUBs by Nate Angell (Hypothes.is)

Today, Hypothesis and our partners, NYU Press and NYU Libraries, the Readium Foundation, Evident Point and EPUB.js, are announcing the world’s first open-source, standards-based annotation capability in an EPUB viewer — or rather two EPUB viewers, because we’re launching with identical functionality in the two most popular open-source frameworks, Readium and EPUB.js. For the first time, publishers and others now have a complete annotation solution for all their content published in all three primary digital formats: HTML, PDF and now, EPUB.

I really want to tinker around in this area!