The EPUB 3 Working Group is pleased to announce that the second Editor's Draft of EPUB 3.1 is now available for community review. The previous Editors Draft, published in January, included some potentially controversial changes, in effect as 'trial balloons". Based on community feedback, some of these proposed changes have now been modified or redacted. A set of new proposed features have also been added in this draft, including the first draft of the EPUB Accessibility specification. The draft also clarifies the prioritization of Author and User styles.
For more information about changes in the new Editors Draft, please refer to the EPUB 3.1 Changes from 3.0.1 document. Those affiliated with IDPF member organizations are encouraged to join the IDPF EPUB Working Group email list to participate directly in the development process; feedback can also be provided via the IDPF GitHub issue tracker.