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Samsung’s One UI 8.5 Beta Reportedly Starts December 8 With Phased Rollout

Leakers link the new timeline to the Galaxy S26 delay, with more test builds tipped into early January.

Overview

  • Multiple sources on X, cited by SamMobile and others, say the public beta will open on December 8.
  • The first wave is reportedly targeted for the US, UK, South Korea and Germany.
  • The second phase is said to begin December 22, adding India and Poland to the program.
  • December 22 is also tipped as the date for a second beta update in initial markets, with a third build expected in early January according to Tarun Vats.
  • Early One UI 8.5 firmware for the Galaxy S25 Ultra and at least two Z Fold 7 builds have leaked, while the final device list and feature set remain unconfirmed.