Forbes reporting:

Whether you like it or not, it’s now a tablet world — we just live in it.

According to a recent survey, one out of every five e-book readers use a Kindle Fire to read and almost as many use an iPad. Some 35% use a Kindle e-ink reader but the two leading tablets combined have now surpassed the older technology and will soon leave it in the dust. With the new Google Nexus 7 tablet rising and Barnes & Noble lowering prices on the Nook tablet, reader momentum toward the newer technology will only accelerate.

So, what does this mean for the book publishing world? At least two things:
1. The rise of e-books and e-reading might slow.
2. Publishers have to start thinking about content in new ways...
http://www.forbes.com/sites/jeremygreenfield/2012/08/14/the-new-tablet-reality-for-e-books-will-readers-read-less/