Groundbreaking news hit the TV OS ecosystem last week: Amazon is ditching its Android Open Source Project (AOSP)-based Fire OS for a custom, Linux-powered operating system dubbed Vega. Amazon had the project in mind since 2017. It is now near completion, as tests on Fire TV streaming sticks have already taken place and launches will begin as early as next year, according to Lowpass. Amazon plans to use Vega for TVs, dongles, tablets—basically everything, including in-vehicle-infotainment applications. It even turns out that Vega has been hiding in plain sight, running a near-identical user experience to that of Fire OS for over a month now on the latest generation of the Echo Show 5 smart display (basically a smart speaker with…