Have heard the same, next generation Antminer should be available in April with much more power efficience, and Bitmain is one of the companies wich one changes the miner market away from long time pre-orders. Have ordered some S1 since december and must say - very fast delivery (shortest delivery was received three days after order from china to germany!), very good support & contact with Sushi - perfect, only the power consumption of S1 is too high for long time mining...