Lenovo's ThinkPad X300 is just the first wave of a new line of ultra-thin notebooks at the company, says an apparent leak from Gizmodo. Timed to coincide with the launch of Intel's low-power Centrino 2 platform and processors in September, the line will scale down to a 12-inch X200 but will also move upwards to a 14-inch X400 and even a 15.4-inch
