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...
I think yu will find it is Asciminer/Bitfountain who should be launching their gen3 miners in April, not Bitmain.
However, Bitmain has dropped a tantalising hint on their thread about their next generation AntMiner:
Will these coupons be able to be used for any new products that come out such as the S2?
When S2 comes, we will be issuing coupons again
Speaking of competition, have any Monarchs yet arrived to customers or even been hashing in Kansas City?