http://www.techradar.com/news/amazons-new-fire-os-update-brings-picture-in-picture-and-more-to-fire-tv

Amazon barely said a word about it amid this week's Echo smart speaker announcements and squabbles with Google over YouTube videos, but there's a new version of the company's Android-based Fire OS headed to the Fire TV.

The bulk of the details are relatively hidden in Amazon's developer documentation, where the company announced Fire OS 6 will be based on Android 7.1.2 Nougat.