From Booknet Canada Blog: TOC 2012 Conference Roundup:
EPUB 3, KF8, iBooks Author, it was all there. There are some cool new tools like Inkling’s authoring tool and Wolfram’s interactive CDF (Computational Document Format) file format and associated creation tools. For those that like to see a e-book code in action, have a look at Digital Bindery’s EPUB 3 slides—you’ll find lots of great code snippets in the slides, plus they have a list of some of their favourite tools and a sample EPUB 3 file on their website that you can break apart. O’Reilly’s e-book team showed some great slides of their e-book workflow (have a look at slide 11), showing how they tweak and adapt their original XML file to produce all the individual file formats.