Amazon Kindle for Android update brings Immersive Mode, lock screen audio playback

Kindle for Android has been updated with the following changes:

• Read books in immersive full-screen mode (Android OS 4.4+)
• Tap the bottom right corner of a page to lock orientation
• Control playback from the lock screen while audio is playing in the book
• Choose system brightness in reader settings
• Navigate table of contents by sub chapter
• Pair with Bluetooth devices (New Permission)

[source]Google Play[/source]