The latest research from Pew Internet suggests that tablets are hot, but hints at slowing demand for standalone eReaders.
The long term trend in personal technology is convergence.
Large tech businesses have been constructed in various niches – phones, e-readers, tablets, netbooks, music players, notebooks, laptops, and so on. But all of these form factors deliver essentially the same thing – a personal computer. There is no reason, for instance, that one can’t read an e-book on a phone, or a tablet. There is no particular reason why one can’t substitute a “phablet” form factor for a phone and a small tablet – and an e-reader.
The holy grail of all of this, of course, is to be able to carry a single device that does everything, and does it well. We aren’t there yet, for several reasons, including interface problems. But we will get there, probably within ten years, maybe sooner.
In the meantime be thankful: Moore’s Law means that you will continue to be able to carry less and less, and do more and more with it.