The Android 17-based firmware, build S948BXXU2ZZE7, was spotted on Samsung's servers by tipster Tarun Vats while the One UI 8.5 beta programme remains unfinished.
The sighting suggests internal testing is under way and typically comes before a public beta, though early builds reportedly show limited new features and interface changes.
Samsung began similar testing around this time last year, and the prolonged One UI 8.5 beta has heightened expectations for a stable release soon.
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