Originally Posted by StoryEnthusiast
Does it mean the structure and basic setup files have changed? Even though my stories are just text + pictures, I plan to follow the latest specifications, ie ePub3.
Since it sounds like your eBooks won't be needing any of the features that ePub 3 has that ePub does not, you'd be crazy to go ePub 3 instead of ePub. You would be limiting comparability tremendously as all stand alone readers are ePub and most apps are ePub. There really isn't ePub 3 yet.