Am 26. Januar 2012 08:47 schrieb Orionist orion.ist@gmail.com:
In fact Apple took the standard epub format and added their own proprietary elements, thus creating a new proprietary "ibooks" format. The new format will only be readable with the iBooks 2 software which is confined to iOS. The format specs are not published either, so I won't hold my breath for compatible readers from other companies.
What's more, the iBook Authoring software is only available for Max OS X Lion. It does not run on any other platform.
I second your suggestion to make our content available in free ebook formats.
Regards, Jürgen.