I sure hope they can improve on that, or we're going to be looking at 1W/GH/s at the wall.
Nothing wrong with 1W/GH. Already better than most/all machines out there now.
0.56 W * 1.1 * 1.1 * 1.1 (this last one is to exaggerate it) = 0.74536W
Anyway this is at low speeds, the real world consumption should be higher.