A leak has revealed the full changelog for Samsung's upcoming One UI 8.5 Beta 4 update, targeting the Galaxy S25 series. The firmware, reportedly version ZZAB, is expected to roll out this week. It includes an updated Bixby assistant and addresses several bugs, such as search history issues in the Phone app and problems with pasting numbers into the keypad. A fix for the AI Select feature is also listed.

This leak provides the clearest look yet at the iterative improvements coming to Samsung's software. The update focuses on stability and refining existing features rather than introducing major new additions. It signals Samsung's ongoing effort to polish its Android skin ahead of a potential stable release, following earlier beta builds that expanded to more countries.

A separate test build with firmware version ZZAD was also mentioned, adding a Direct Voicemail feature. This suggests Samsung is testing multiple feature sets simultaneously. For Galaxy S25 owners, the update promises a smoother experience, while the broader industry sees Samsung continuing its rapid, iterative software cycle to compete with Google's Pixel updates.