Not long ago when a book was published with a mistake or revision no matter how small, your printed book was stuck with that mistake. With e-books you have the ability to “update” your copy of the book whenever a book is updated. If you happened to purchase Steve Jobs, by Walter Issacson in Kindle format from Amazon you’ll likely experience this yourself.
Saturday I received an e-mail from Amazon informing me of an updated version of the e-book with image and caption layout corrections. Amazon doesn’t automatically push these updates to your e-reader. Instead they offer you a chance to “opt-in” for the update via e-mail so they don’t mess up your bookmarks or anything else. The other reason is so they aren’t “messing” with your e-book library without your permission.
Here’s the message I received from Amazon notifying me of the update:
For a book that is addressing a current event-type of topic this feature could be very useful as the author could ensure the content doesn’t become stale.