Doesn't authority come from accuracy, not recency? If you see any part of the article that is inaccurate, you should edit it and make it more authoritative.
I remember seeing papers and presentations on go! from eight or so years ago. Fujitsu Labs of America used it to build some multiagent systems. It drew on many years of previous work by Clark and McCabe, which I first came to know of in the mid 1980s.