Well, I can't say I'm surprised to see the headlines today that Google will lauch an e-bookstore, "Google Editions," this summer.
"Google says users will be able to buy digital copies of books they discover through its book-search service. It will also allow book retailers—even independent shops—to sell Google Editions on their own sites, giving partners the bulk of the revenue. ... [U]sers of Google Editions would be able to read books from a web browser—meaning that the type of e-reader device wouldn't matter. The company also could build software to optimize reading on certain devices like an iPhone or iPad but hasn't announced any specific plans."
Lots more here.