Flex will be taking orders at the event for shipment at a later time. My recommendation is to place your order now...either by calling Flex or ordering on line. That way you will be "on the list". The units will ship by date the order is placed so the sooner the better.
They said in the announcement that the early orders should be receiving info about payment and shipment very soon. I have a ways to go I think. At least I will be reading the manual before it gets here.