The PadFone S seems to be identical to the PadFone X, thus comprising of a 5-inch, 1080p Android KitKat smartphone, and an 8.9-inch tablet dock (with a 1,200 x 1,920 pixel resolution). The smartphone features LTE, a 13MP rear camera, a 2MP front-facing camera, quad-core 2.3GHz Snapdragon 800 processor, 2GB of RAM, 16GB of expandable internal memory, and a 2,300 mAh battery. The tablet dock provides an extra 4,990 mAH battery, dual speakers, and its own 1MP front-facing camera.
Reportedly, the Asus PadFone S will be available in Taiwan (and possibly in other markets) starting July. We’ll see if AT&T launches its PadFone X by then.
source: Sogi.tw (translated)