It is apparently rolling out to 2017-2021 Android TVs from. OnePlus, Philips, Sony, Sharp, Realme, TCL and other brands. It has started to appear on Nexus Player, Nokia, Nvidia Shield, Motorola, Strong, and Xiaomi boxes. It is not clear exactly which devices will get it but it would appear that Google is planning to bring it to almost every device. If you are not seeing it yet, it is probably just a matter of time. It does not require a system update as Google is pushing it out directly as an update to the launcher app (seemingly version 3.0).
In several European nations, India, and other areas, the new Google TV-like user interface is rolling out to Philips, Sony, and TCL Android TVs, as well as Nvidia Shield and other boxes. Users have expressed their dissatisfaction with autoplaying advertisements. Following its initial introduction in February in North America and a couple of Europe’s largest countries, it is now being reported that it will be rolled out in other regions. Over 20 consumers in Europe have contacted FlatpanelsHD since it first appeared last week. New reports from India, Brazil, and other countries are also available.
The new Android TV user interface mimics Google TV but it does not offer the full functionality and has fewer tabs compared to the new Chromecast and 2021 TVs from Sony or TCL. The new user interface has been out for a while in the US, Australia, Canada, Germany and France. Users of especially Nvidia Shield have voiced their concerns on reddit about an increasing number of ads, autoplay and recommendations. FlatpanelsHD wrote about it in July. Autoplaying ads can be disabled from Preferences -> Home Screen -> Disable video/audio previews
In 2019, Google told partners that it would expand its ads offerings on Android TV in 2020 and beyond. The revamped user interface is part of Google’s plan to put content front and center to reduce the time spent inside apps trying to find new content. Existing Android TV devices will be updated whereas most new TVs and media players are expected to come preloaded with Google TV.