Samsung One UI 9 Testing Breaks Cover for Next Foldables as Flip 8 Build Spotted and Z Fold 7 Firmware Leaks

Early builds hint at Samsung lining up a summer release window for Android 17 on its next foldables.

Overview

Tipster Tarun Vats flagged firmware F776USQU0AZB1 tied to model SM-F776, pointing to a One UI 9 test build for the Galaxy Z Flip 8.
SamMobile published a very early internal One UI 9 (Android 17) build for the Galaxy Z Fold 7, making the firmware available to download.
The leaked Z Fold 7 build targets carrier-locked US units with model number SM-F966U, carries instability risks, and is not an official release.
Reports identify One UI 9 as based on Android 17, codenamed Cinnamon Bun, with testing appearing before a broad One UI 8.5 rollout.
Rumors suggest the Flip 8 may use the Exynos 2600 chipset, and a newly surfaced model number SM-F971U is speculated to be a wider Fold variant.