You realise that phoronix is just giving you the facts? Those screenshots of steam were real and at no point did they say that steam is surely coming to linux.
Yeah, he did, and on top of saying it was coming to Linux, he also said it was "official" when in no way was it officially stated anywhere. He just said that because of the existence of the Linux client.
In any case, it's a pity Oil Rush didn't make it out in time for xmas.