I am pleased to announce the launch of epub-labs!
EPUB-labs is intended to be an informal, open development
space, with associated mailing list, for ebook and media
developers to begin exploring the best ways of achieving
support for enhanced transmedia and internationalization
experiences for ebooks. epub-labs is intended to foster
discussion of best practices for html5, css v2/v3, and
other technologies for enhanced ebooks, in both web-based
and more traditional package delivery formats.