What Happened
Samsung appears to be preparing for the launch of its One UI 9.5 Beta Program. According to SamMobile, a beta build of the upcoming software has been spotted on Samsung's servers running on a Galaxy S26 Ultra.
The Details
The spotted beta build carries the firmware version S948BXXU6ZZK3, according to information shared via tipster @Kailash0729 and cited by SamMobile. In addition to the new software build, the firmware string reveals that Samsung has upgraded the phone's bootloader version from U5 to U6.
While an exact launch date has not been officially announced, SamMobile reports that the One UI 9.5 Beta Program could open later in November or early next month, based on recent company track records.
The Background
The discovery of the new beta build comes as Samsung nears the completion of its One UI 9.0 rollout for eligible Galaxy devices. SamMobile notes that the upcoming One UI 9.5 software update is based on Android 17. Following the beta testing phase, the stable version of One UI 9.5 is anticipated to make its debut alongside the Galaxy S27 series early next year.