For those who love reading their Kindle e-books on their iPhones or iPads, Amazon has recently issued a statement which strongly suggests that those who have the Kindle app on their iOS devices should update it before they install the iOS 7 update, which at this point in time does not have a specific release date. According to Amazon, without going into specifics, “This is a fix for a Kindle issue with the upcoming iOS7 OS upgrade that may cause customers to have to re-register and re-download books from Amazon. Please download and install – this is a required update before upgrading to iOS7.”It is unclear if this is an issue with the Amazon Kindle app itself, or if there is some kind of conflict with the iOS 7 code that will cause this issue. In any case it’s not a big deal having to redownload and reregister, but why go through all that hassle when the update can be done and over with in a matter of seconds/minutes, right? Apart from that the bug does not appear to be too disastrous, but for those with the Kindle app on their iOS device, you might want to hit the update button just to be safe.