https://techcrunch.com/2021/09/13/kindle-releases-a-software-redesign-to-make-navigation-easier/

Yeah, yeah, you don’t need to charge a real book — but you also don’t need to update a book’s software, and that’s also often true for Amazon’s Kindle, which rarely gets a software refresh. But now, our trusty Kindles remind us that they’re actually Wi-Fi connected, electronic devices capable of change as Amazon unveils a significant design upgrade for the first time in years.

To simplify navigation, the new look adds a two-tab bar to the bottom of the home screen, letting users easily toggle between the “home” and “library” screens. To access frequently used features, Kindle introduced an arrow on the top of the screen. When tapped, it reveals buttons to access airplane mode, bluetooth, dark mode, sync, or the rest of the settings menu. There’s also a brightness slider.