I guess this answers the question about whether Terrahash has enough chips for their pre-orders! 
Well it could also just be a question of Terrahash making sure they can keep selling miners and keep delivery dates.
In the spirit of fairness, this is exactly what they told us they were going to do, so I don't see any reason to assume this order is anything but chips to fund miners after the first 10 or 20K (hopefully 20).