Interesting thanks for sharing. Still not convinced this will result in significantly more efficient chips. As we have seen how AM 144nm tech competes with KNC 28nm, I wonder how 40nm vs 28nm will compare.
There's a notice on the linked page that KnC's 20nm design should reduce power draw per GH by some 30%. That would be somewhere around 0.7W/GH, given that 28nm Jupiter is listed with ~1W/GH (at wall).
Now, IIRC 40nm ASICminer's chip is expected to perform at 0.2W/GH.