Looking at http://readium.org/
You would be better off helping to add HTML5 support to QtWebKit if you want most applications to actually support ePub3 (including future ebook readers).
Originally Posted by nicklaus_
epub3 is a recommended Specification effective October 11, 2011. We have http://readium.org/
that is an open source reference system and rendering engine for EPUB with suport for EPUB3. I think that the future is here and ibooks author from apple it's a proof of that.
My question is - anyone with some technical experience developing sigil considers the current code suitable to be enhanced in order to offer epub3 suport or it's better start from scratch a new project ?
Thanks in advance