Spotted: NVIDIA's Kal-El reference tablet rocking Windows 8 at Build

This isn't the first time the Superman-named Kal-El tablet from NVIDIA has been seen, but it's the first time its been seen close up. NVIDIA just recently launched their Windows 8 developer program, in anticipation for the absolutely salvatingly beautiful Windows 8. Some interesting news did catch my eye though: NVIDIA expects to see significant battery life gains on Kal-El notebooks, as in days, not hours.

Yes, you read that right: days! Unfortunately, the tablet was not able to be tested... but I'm sure it won't be long until we see Kal-El.