There are rumors that the next gen asicminer product will be available in April and use .5w/gh. I'm also very impressed by what bitmain was able to do with their antminers and hope they come out with a more power efficient version soon. The 1TH dragon units also look very interesting.
Stop pre-ordering, people! There is no need to take additional risk with pre-orders when competent companies are producing mining hardware at a fair price that ships immediately.
Knc could be dominating the in stock bitcoin mining hardware market by shipping jupiters as fast as they can make them, but they chose to misuse Neptune preorder money to build their own private mining farm.