One of the features available on the Model 3 and Model Y that is not available on the S/X is the interior cabin camera. While sometimes controversial, the selfie camera will be used to help monitor occupants when your Tesla is giving autonomous rides to Robotaxi passengers, and potentially driver monitoring when Autopilot is engaged.
not yet, but there's something called "S/X P2" with hw3.2 that does have the selfie…
— green (@greentheonly) December 30, 2020
This evidence of a possible interior refresh is just the latest in a growing number of hints, all of which are pointing to an impending design change.
Earlier this month Tesla notified employees working on the S/X production lines of an 18 day shutdown over Christmas and New Years.