Where did all Valve's Linux support go?

I have stumbled on series of articles on HN from about 2 years ago, that reiterated Valve's support of Linux gaming and their Linux-powered gaming console.

Well months passed, and maybe because I am not watching gaming console industry that much (I know about the sad story of OUYA console and that's about it), I haven't really noticed any results of all this effort.

Is it because I am not looking well?