Recently Google launched to document their new open source operating system. It is currently speculated that Fuchsia OS will be the natural successor to Android and Chrome OS because it is using a microkernel designed to scale for any application context called Zircon. With the ability to run on ARM and x86 architecture, Zircon will allow Fuchsia to be compatible with legacy applications and many devices. I think the fact that the project is open source and already has documentation means that Google is interested in being as transparent as possible and respecting the privacy of their user base going forward.

Zircon info