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With the public release of iOS 7 on the horizon, users should expect to have to install a number of app updates over the next several weeks. Developers have a lot of work to do to prepare their apps for the big upcoming change.

Amazon took the first step this weekend, issuing what it is calling a ‘required’ update for its Kindle app. The company says that users of the popular e-book service must download the new version prior to upgrading to iOS 7…

From the release notes:

What’s New in Version 3.9.2

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.”

And that’s all there is to it. There’s no new features, or other improvements—just a simple housekeeping procedure to ensure a smooth transition for Kindle users who are planning to update to the new firmware later this month.

Apple first showed off iOS 7 back in June, at its Developer conference. The software has been completely redesigned from the ground up, with a number of new features including true multitasking, all-new Control Center, and more.

If you plan on upgrading to iOS 7, and are a Kindle user, you’ll want to make sure you grab this update. It’s available in the App Store, under the Updates tab, otherwise new users can click here to download it.