Originally Posted by Micah
Implementing a native code OPDS catalog support feature is on my wish list for 2013, but is a bit low on the list, and there's some big ones before it like full EPUB3 support. So I can't really give you a definitive answer, as we are constantly adjusting where we spend our limited resources to stay in business.
IMHO, don't bother with ePub 3 yet. It's a waste of your time. It's not supported enough and probably won't be as long as the multimedia features are in the specification. And it won't be supported until ADE is updated to handle ePub 3 and every version of ADE is then updated to an ePub 3 capable version.
You'd be better off with the OPDS Catalog support then ePub 3.