The Galaxy S26 range just launched with One UI 8.5 pre-installed, but Samsung’s One UI 9 is here already – in a way. The very first build of One UI 9 has been spotted and installed by SamMobile , with the 2.6GB software available for the S26 Ultra . It confirms that Samsung is working on its Android 17 skin along the same timeline as One UI 8.5. As this is such an early build, there’s not too much to glean, and of course, it may change over the course of development. So far, the volume and brightness controls within quick settings are bigger and parental controls now has its own section in the settings menu. One UI 9 — Quick Panel First Look The volume and brightness sliders appear thicker in the new Quick Panel design. Keep in mind, this is from a very early internal build, so things may still change in later or final versions. REPOST pic.twitter.com/dVOwrHUcsU — Tarun Vats (@tarunvats33) March 16, 2026 Other Android 17 elements could arrive too, such as app windows, lock screen widgets and better adaptability for apps across different screen sizes. It’s also set to introduce iOS-style split panels for notifications and quick settings . Although Samsung is expected to launch Android 17 for Galaxy phones in a few months, it will likely be based on One UI 8.5 still. This should happen in July when the firm unveils its next generation of foldables – primarily the Galaxy Z Fold 8 and Galaxy Z Flip 8 . One UI 9 could launch around the same time, or possibly before, but only as a beta program for the Galaxy 26 phones . We’ll keep an eye on the progress of One UI 9 over the coming weeks and months. Stock Android vs manufacturer skins: What’s the real difference?