You can get brief technical specs here at their website (English version): http://www.gridseed.com/main.php

Orders are not accepted yet, but the release date is expected to be announced soon (they said they would sell the actual items directly, not pre-orders).

They sold some engineering samples at the release conference, but the price seemed pretty high (400 RMB per chips, or roughly $65 per chip -- according to: http://www.cybtc.com/thread-3226-1-1.html ).