As the developer for the Kobo Touch Extended plugin, and developing a conversion plugin to create KePub files, I'm interested in any new information you have. Please take a look around the plugin thread (see my signature for the link) and the various other KePub threads around this forum and the calibre forum, there may be information there that can fill in any blanks you may have and you can see where we're at so far. Hopefully you can fill in some of our blank spots too