Valve’s created a community group called Steam Universe. It’s dedicated to discussion and announcements surrounding SteamOS, Beta Hardware, and Big Picture Mode
Valve have a habit of creating these groups when launching a new project. They did the same for Steam Trading Cards. It’s usually through these groups that they offer beta access to their upcoming releases. It’s also where the developers head to gauge public feedback.
That group will be the place to go if you want to learn about Steam Universe. Ask some questions, you may get a developer responding.