And on sep.15th the app on my iMac will no longer work at all anymore. Senior Amazon support staff explained that Apple requested Amazon force all Mac kindle users to upgrade to the 10.10 before they can use the latest Kindle app. You can check the Kindle version number by choosing 'Kindle' from the menu of your app and then selecting 'About Kindle.' Please see our troubleshooting pages for Kindle for Mac if you have any other questions.
You can easily download and install the latest version of the Kindle for Mac from our download page on Amazon. Our latest update (version 1.11.0 or above) is still free, and includes important bug fixes that are required to continue using the app. It's time to update your Kindle for Mac app! We appreciate the time you've spent reading with our Kindle for Mac app, but you have registered a version on one of your computers that is out of date and scheduled to be retired by September 15.
Would like to share an email I got from Amazon a few days ago:
