There are numerous new enhancements, including the international rollout of the Kindle Assistive Reader, new line spacing settings, and adjustments to the global fonts. You will be able to install the latest software on all 11th and 12th-generation Kindle e-readers, as well as all models of the Kindle Scribe and the first-generation Kindle Colorsoft. The Kindle Assistive Reader was released a month ago for the Kindle, but Amazon temporarily disabled it to resolve some bugs before enabling it for select users. Kindle Assistive Reader is, at its core, a TTS system that uses natural-sounding voices to read the books aloud. Finally, there is a lock screen rotation that keeps your screen in portrait or landscape mode when moving your Kindle.