Atualizando para informações: 120hz a 1080p na sony x905f
Update 06/11/2018: A note for Xbox One X and Xbox One S owners: 120Hz from the Xbox won't work with this TV (and all 2017-2018 Sony's we've tested), because the TV requires a forced resolution for 120 Hz to be displayed.
Update 06/12/2018: It turns out 1080p @ 120Hz is possible, when the Xbox's connection type is changed from Auto-detect (Recommended) to HDMI: (Xbox > Settings > Display & sound > Video fidelity & overscan > Display > Connection > HDMI). Unfortunately in this mode 4k, HDR, 50 Hz and 24 Hz aren't possible, so this mode is only recommended when the higher refresh rate of 120 Hz is more important to you than these other features.
Update 06/18/2018: Correction, 24Hz and 50Hz are in fact possible with the Xbox's connection type set to HDMI.