OverDrive is quickly updating all U.S. public and school library websites to support Kindle compatibility. We will complete this update to all our U.S. library partner sites within the next week (from September 19, 2011). Kindle compatibility will be automatically added to your library’s Virtual Branch website; no action is required by your library. Your library may already have Kindle Books available for lending. If your library’s OverDrive-powered website has a Kindle icon on the home page that says ‘Coming Soon’, this will change to ‘Now Available’ once the change has been made. Continue to check the status of this icon to know once it is ready. Once changed, updated sections of your website including the My Help wizard, Help pages, and FAQs with new information about Kindle compatibility will be made available as a resource to you.
from the OverDrive Support Services