Who says a carbon fiber chassis with sufficient cooling for a Core i7 has to be heavy? The ThinkPad X230s, revealed on Lenovo's Chinese site, looks like a significantly more portable version of last year's X230, with a weight of just 1.28kg (2.8 pounds) and a minimum thickness of 17.7mm (0.7 inches). There's room inside for up to 8GB of RAM, either a 240GB SSD or 1TB HDD, fingerprint reader, 720p webcam, VGA and Mini DisplayPort outputs, two USB 3.0 ports and keyboard backlighting. It's a Windows 8 machine, of course, with shortcut keys and a gesture-optimized TrackPad. We're on the lookout for further details, including any pricing, and will update this post soon as we have some.