Brock has answered emails but only to say that they have a "huge backlog" due to demand of the 6990.  Essentially if you order today or whenever, you get put on a list and must wait.  But you wont get in line until you first pay/order a rig.  The only telephone number they provide is to the parent (supplier) company ZAreason.  First come first sever.  There needs to be big price correction in BTC or perhaps better video cards hitting market to open up this bottleneck at the retail level.  It will happen but will take time.