It might eventually phase out Android one of these days as it snowballs in popularity - which could be the exact scenario which Google is aiming for, actually. The UI is based on Flutter, which is "a heavily optimized, mobile-first 2D rendering engine (with excellent support for text)" and a little more than that.
Thanks to ArsTechnica, we now know that the Fuchsia OS will host the Armadillo UI, which is inspired by the Material Design language from the Android versions of today. Android apps written in Flutter could potentially run on Fuchsia, which would aid the transition considerably. On the Android Beta Program page, Google says, "The beta for Android Nougat has concluded, and all devices that were opted in have been updated to the current public version". It's unclear what it's main goal will be when/if it gets finished, but it looks like it's development is accelerating as Google has officially given the OS its own user interface known as Armadillo.
If you fancy giving it a spin, it's possible to download the source and compile Fuchsia's System UI into an Android APK and install it on an Android device, Ars notes. Now, we're getting another peek at the operating system, complete with placeholder graphics. The new feature will give the display screens a wider range of colours. There's a profile picture, name, date, and battery icon in the center. User's profile picture is at the focal point, and provides variety of settings on a tap, such as volume, brightness, and other controls. Mysteriously there are buttons for "log out" and "more" which doesn't work so far. It's a vertical scrolling list of cards. Tapping on any card opens a full-screen interface.
Conceptually a suggestion is a representation of an action the user can take to augment an existing story or to start a new one.It appears that Google definitely is, and it may be pinning its future on Fuchsia.
The biggest new feature in the Google I/O 2017 app update is the ability for attendees to reserve seats for any of the conference's sessions ahead of time.
Initially, the Android O used only for the recent Google devices, but this developer's preview can be used by all the smartphones like Nexus 5X, Nexus 6P, Pixel, the Pixel C tablet, Pixel XL phones, and Nexus Player Android TV set-top box.