Sony may enable two of the display features of the Xperia 5 II on the Xperia 1 II, according to a new report. Apparently, the Xperia 1 II has had a 120 Hz display from the beginning, despite being limited to 60 Hz.
https://www.notebookcheck.net/A-120-Hz-refresh-rate-and-240-Hz-touch-sampling-may-be-headed-to-the-Sony-Xperia-1-II.494583.0.html