Apple today as anticipated launched the new MacBook Air, its first major redesign of the ultraportable since 2008. It now occupies an even thinner wedge-like shape, at 0.68 inches, but still finds room for a second USB port and an SD card reader. The 13.3-inch model is lighter at 2.9 pounds, but a brand-new 11.6-inch model (without the SD card slot) weighs just 2.3 pounds.
