http://www.astm.org/COMMIT/SUBCOMMIT/F0827.htm
Ah that's too bad. They're starting their work on sub 1J airsoft. I'm not surprised. The biggest stakeholders attending the conference in '96 were Palco and Crossman who market a lot of lower energy stuff. I couldn't follow the conference around as it moved across America (no travel budget) and I couldn't drum up enough interest with other airsofters in the US to attend.
Perhaps things will change now that Spartan (US Classic Army distribution) and Palco have been bought by Cybergun. Cybergun has also acquired Innokatsu. If Cybergun gets more into high end airsoft in the US, they will have a vested interest in developing regulations for higher energy airsoft.