Update: interesting summary of the repository - "So, the stack seems to be: Dart is the language for GUI apps, Flutter provides the widgets, and Escher renders the layers."
Something intriguing: a new open source operating system from Google, Fuchsia, has found its way to Google's repositories. There's pretty much no information anywhere about this, and maybe I'm making way too much of this, but until we know more - anybody care to speculate?
There's a Fuchsia file that just reads "Pink + Purple == Fuchsia (a new Operating System)", so that's not much help. There's documentation on the kernel, Magenta, which may be of more use - it reads, among other things, "Magenta targets modern phones and modern personal computers with fast processors, non-trivial amounts of ram with arbitrary peripherals doing open ended computation." There's probably a lot more documentation in the repository, but I don't have the proper background to infer too much from what's going on.
Another very, very intriguing piece of information: it turns out several big names from the operating system industry (is that even a thing?) are involved - people who worked on NewOS, BeOS, Danger, iOS, and Palm's webOS, such as Travis Geiselbrecht and Brian Swetland.
This could be "just" a research project, or something more. Very interesting.