Rob from Gottabemobile received an email from Amazon confirming 6 Kindles can download a book, other content is limited.
The licenses associated with books and other non-subscription content purchased from the Kindle Store allow you to download and view(at the same time) each item from up to 6 different Kindles registered to the Amazon.com account from which the original purchase was made.
Subscription items can only be downloaded to one Kindle.
If you register a new Kindle to your Amazon.com account, you'll be able to use the Content Manager or Your Media Library on Amazon.com to download content you've purchased from that account. You will not be able to view content on a Kindle that is not registered to the Amazon.com account from which the original purchase was made. You cannot share books you purchase with other Kindles that are not associated with your account.


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