Samsung has reportedly begun developing One UI 8.5 for its Galaxy S23 series, signaling a faster-than-expected move toward its next major software update. This development comes right after Samsung suspended the One UI 8.0 (Android 16) rollout, which had only recently begun earlier this month. Many Galaxy S23, S23+, and S23 Ultra users were left surprised when the One UI 8.0 update was abruptly halted. Samsung has yet to provide an official reason for the suspension, though it may be related to performance issues or undisclosed bugs identified during the initial rollout.
According to well-known tipster Tarun Vats, Samsung is currently testing a new firmware version—S918BXXU9FYJ3– for the Galaxy S23 Ultra, suggesting that the internal testing phase for One UI 8.5 is now underway. While details about new features remain scarce, this firmware confirms that the company has already started fine-tuning its next big software release.

Since One UI 8.5 is in its early stages of development, users can expect a few months of internal and beta testing before any public rollout. The update will likely refine performance, improve AI integration, and introduce new customization and optimization features.
Samsung’s quick transition to One UI 8.5 demonstrates its ongoing commitment to enhancing the Galaxy S23 lineup’s software experience. Users can expect more stability, refined features, and a smoother interface once the next version officially launches.