ASUS is still holding back some of the details on this one, but what it has revealed about its new U36 ultraportable is certainly enough to get us interested. Weighing in at just over three pounds, the laptop is said to pack your choice of a Core i3 or i5 processors, along with NVIDIA Optimus graphics, and a four-cell battery that promises ten hours of battery life -- all of which comes wrapped in a 0.75-inch magnesium shell that's apparently available in your choice of black or silver. Unfortunately, all other details, including the screen size (though 13.3-inch seems likely), remain a bit of a mystery, as does the pricing and launch details.