I asked about SMAA in the comments of this article:
http://www.anandtech.com/show/5458/the-radeon-hd-7970-reprise-pcie-bandwidth-overclocking-and-msaa
Which partially covered "the state of AA"
Ryan did respond with "As I understand it, SMAA is still a work in progress. It would be premature to comment on it at this time. "
So either it's not mature enough or there's some conspiracy keeping the media quiet. Conspiracies are always doubtful, so I'm going with not mature enough yet? Maybe developers just aren't exposed enough to it yet.
There was a tech demo video posted here several months ago, it looked like good stuff. (found it:
http://www.iryoku.com/smaa/ download at high quality and watch, streaming quality isn't the same).