Also see Google may put its Fuchsia OS on smart home devices within three years (The Verge)
"Here’s what’s already known about Fuchsia: Alphabet Inc.’s Google started quietly posting code online in 2016, and the company has let outside app developers tinker with bits of the open-source code. Google has also begun to experiment with applications for the system, such as interactive screen displays and voice commands for YouTube.Project ‘Fuchsia’: Google Is Quietly Working on a Successor to Android -- Bloomberg
But members of the Fuchsia team have discussed a grander plan that is being reported here for the first time: Creating a single operating system capable of running all the company’s in-house gadgets, like Pixel phones and smart speakers, as well as third-party devices that now rely on Android and another system called Chrome OS, according to people familiar with the conversations.
According to one of the people, engineers have said they want to embed Fuchsia on connected home devices, such as voice-controlled speakers, within three years, then move on to larger machines such as laptops. Ultimately the team aspires to swap in their system for Android, the software that powers more than three quarters of the world’s smartphones, said the people, who asked not to be identified discussing internal matters. The aim is for this to happen in the next half decade, one person said."