The smaller ThinkPads are also being updated with Kaby Lake. All three, Yoga 370, X270 and ThinkPad 13 are in the 12,5" to 13,3" market-segment, which qualifies all of them as subnotebooks. One of the models, the Yoga, seems to replace two older models at the same time.
http://www.notebookcheck.net/Lenovo-ThinkPad-Two-subnotebooks-and-a-convertible-with-Kaby-Lake-X270-ThinkPad-13-Yoga-370.189004.0.html