Amazon.com is planning on offering books in online form in addition to the physical objects. They will be selling online access to digital books, and it seems customers will be able to buy the entire book or a portion, such as a chapter. This is only part of the story.
Amazon also plans on offering an “upgrade” option, where customers who purchase the physical purchase will be offered to upgrade their purchase to include the online edition. This bundling will allow people to begin reading their new book while waiting for the delivery to arrive.
I imagine this new offering will be wildly popular, as long as the price point isn’t too high.