On 2018-09-24 the EPUB 3 Community Group published a draft of the following specification:
Note that the specification is nearly finished, and we are encouraging feedback from the community. EPUB 3.2 consists of several interrelated specifications:
- EPUB 3.2.
- EPUB 3.2 Overview.
- EPUB 3.2 Content Documents.
- EPUB 3.2 Packages.
- EPUB 3.2 Media Overlays.
- EPUB 3.2 Open Container Format (OCF).
- EPUB 3.2 Changes from 3.0.1.
Participants contribute material to this specification under the W3C Community Contributor License Agreement (CLA).
If you have any questions, please contact the group on their public list: public-epub3@w3.org. Learn more about the EPUB 3 Community Group.