Originally Posted by Nate the great
I'm sorry, but no. Discussion for the iBooks format often touched on how Apple corrupted the ePub format. Many in digital publishing see it as a form of Epub.
Just because many think it's ePub does not make it so. It's not ePub because it does not conform to the ePub 3 fixed layout specification. It's just Apple doing things their own way.
So if I call KF8 ePub, would that make it ePub? No, it would not. Calling Apple's fixed layout format ePub is the same thing. It's not ePub.