I'm thinking that Craig's waiting for the dust to settle on the 445, or else the RT pre-orders to reach critical mass.
He will take your order, tho, just no down payment. That's the uncertainty part.
Don't know how many RT preorders are in, but this current run is for 10 amps.
Craig says that the boards are pretty much stuffed now except for lacking one part.
EDIT: Per Craig today, "The boards have shipped, waiting on metal."