Overview
- Tipsters and server logs show early One UI 9.5 test builds for the Galaxy S26, S26 Plus, and S26 Ultra with build IDs S948BXXU6ZZK3, S948BOXM6ZZK3, and S948BXXU6CZK3.
- The spotted builds change the bootloader from U5 to U6, a technical marker that typically reflects lower-level platform work and can limit easy downgrades to earlier firmware.
- Observers on social media are predicting Samsung may open registrations for a public One UI 9.5 beta soon, but that timing is unconfirmed and should be treated as speculation.
- Unverified rumors say One UI 9.5 will remain based on Android 17 and may add a glass-like visual style and a return of App Lock, though no features have been confirmed by Samsung.
- Reports differ on the wider launch window with some outlets linking a formal debut to the Galaxy S27 launch and others pointing to a general rollout in spring 2027, while Samsung historically tests major updates first on flagship models.