I got this email from Apple, it says at the end:
iBooks Author 2.1.3 Requirement
Starting , new or updated Multi-Touch books submitted to the iBooks Store must be created with iBooks Author 2.1.3 or later.
Multi-Touch books delivered prior to this date will still be reviewed by Apple or, if already approved, will remain available on the iBooks Store.
Do you know if that means ALL books, or the ones created with iBooks Author now needing to upgrade version.
If they are only allowing books created with iBooks Author, that'd shake the industry as I understand it.
I don't have a copy of the Apple authoring rules, but in their marketing materials they always connect "Mutli-Touch" books with books created with iBooks Author. I don't think it's precluding EPUB 3 files. I think they're saying if you're using iBooks Author, you must at least be using version 2.1.3 or later.
What Steve said is correct.
Thanks a lot. That's a relief.