Samsung has kicked development of One UI 8 into high gear after Google moved its Android release timeline earlier in the year.
As a result, the company is racing to get the new One UI ready for its foldable phones this summer, and early leaks show modest but visible UI tweaks headed to core apps.
Why One UI 8 moved faster?

Google’s plan to ship a new Android version roughly three months earlier than usual forced Samsung to compress its schedule. Historically, Samsung pushed One UI updates to existing phones shortly after Android launches in August or September, but this year’s anticipated June Android release changed that calculus.
Samsung wants One UI 8 in place for its next-generation foldables, so the company accelerated development to meet a summer deployment target.
What the leaks reveal

Early screenshots from a test build suggest One UI 8 will be an evolutionary update rather than a radical redesign. The update follows the big design and feature shifts Samsung introduced in One UI 7, refining more than overhauling.
Small visual changes are visible in system apps like Gallery and Files. The gallery shows more transparent submenu panels and new icon outlines. Files swaps some square tiles for more rectangular panels on its new home screen layout.
Features and availability

The test build also indicates Samsung is planning to bring the Now Brief feature to older phones. Until now, that feature has been exclusive to particular Galaxy models.
Samsung describes One UI 8 as being in a phase of deep internal testing, and a public beta could appear in the coming weeks. With foldable launches expected in July or August, the company has limited time left to finalize the software.