Google OS?

I've heard / seen rumors of a Google operating system for home computers. I have no idea if it is true or not, but I'm curious about it! It would be easy to dress up a Linux distribution to look like a Google OS, but it wouldn't be Google. Would Google make a Linux distro, or would they make their own OS? Seems unlikely Google would release an OS, and if they do, don't expect it anytime soon. If I hear anything of it, I will post more!