若干微妙ですが、Swift ペアとUSB-C対応は大きいな。

ThinkPad TrackPoint Keyboard II: Lenovo updates external TrackPoint keyboard - NotebookCheck.net News
https://www.notebookcheck.net/ThinkPad-TrackPoint-Keyboard-II-Lenovo-updates-external-TrackPoint-keyboard.448649.0.html