There are many exciting things to be found in the new version of InDesign. But if you read carefully, most of them are focused on an unspecified future where ePUB3 and HTML5 /CSS3 are the normal standards of ebook publishing. They are not now. In fact, there is no ePUB3 reader in common use at this time. In fact, there is really nothing out there for readers of ePUB books.
I love CS6. It makes excellent ePUBs. But many of the tools I have been hoping for are not available. I still want floating divs controls, borders and backgrounds for paragraphs, and all the things which can be done with to latest and greatest versions of ePUB3. But at this point, I do not even know what cane done, because there is not tool available to read them.
There is no ePUB3 reader yet.
So, rather than speculate, my advice is upgrade—you’ll need the better code provided by CS6. But, do not be confused by the hype.
- ePUB3: no real solutions yet (hackberry-fonts.com)