Google has been quietly developing the Fuchsia operating system (OS) from the ground up as a non-Linux-based alternative to its current OS. Google confirmed to 9to5Google that the upgrade is coming with the new firmware update for its first-generation Nest Hub devices. Users should have it soon, if not already.
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Previously, Nest Hub devices utilized Google Cast as the operating system. The differences between Cast and Fuchsia are so minimal that users might not even notice any changes. The user interface is still the same and so is booting the device. However, improvements in casting make it faster on the Fuchsia OS.