"Analysts estimate Americans will buy on the order of 6 million e-readers this year"
Flashback to 1975, Dahl sold over 5 million of his pet rocks in a six month period.
I don't think there is a significant market for dedicated devices, and doubt very much that "by 2014, an estimated 32 million people will own one"; 32 million world wide perhaps, but not 32 million Americans.
Also, if the analysts were talking about devices that have the functionality to read e-books, we're well past that mark already and it's passing has not been marked by 'an e-book age' of any significance.