If you’re the sort who create ebooks in ePub 3, perhaps tweaking the files created by Scrivener, you might want to watch a helpful Liz Castro tutorial recapped from the recent IDPF 2013 conference.
There are quite a few helpful comments on what you can and can’t do with various ereaders. Note too that on the side of the webpage are links to other presentations about ePub.
You might also want to follow Liz Castro’s blog:
There she notes an interesting development in the giant publisher world:
That’s good news and a hint that, in the not too distant future, we may finally have a single standard for ebooks.
–Michael W. Perry, Seattle