One UI 9.0 based on Android 17 will be the last major OS upgrade for the Galaxy S23, S23+, S23 Ultra and S23 FE, Samsung confirmed in a support exchange shared by tipster Tarun Vats.
The decision matches Samsung's original promise of 4 major Android upgrades for the S23 lineup, which launched on One UI 5.1 based on Android 13.
Samsung has already delivered 3 major upgrades, and the phones are currently running One UI 8.5 on Android 16 QPR2, leaving Android 17 as the final eligible step.
The confirmation does not change the policy but makes official what had long been expected, with testing of the new software apparently already underway.