Galaxy S24 will receive the fourth beta of One UI 7.0: stable update may appear in mid-February

Galaxy S24 series users were expecting the stable One UI 7.0 update to be released shortly after the Galaxy S25 launch. However, Samsung seems to be planning to release the fourth beta version first.
Here's What We Know
Last week, it was reported that the company is preparing another test build of One UI 7.0. It should fix problems with display colour calibration. Now, a new firmware with a number ending in ZYB4 has been found on Samsung's server. The previous, third beta version had the code ZXLJ.
Samsung's Beta Operations team has confirmed that One UI 7.0 Beta 4 is scheduled for release next week. This means that the stable update will not be released in the coming days. Samsung's official statement notes that the delay is due to system improvements, and the company is making efforts to release the new version as soon as possible.
It is expected that the stable One UI 7.0 for Galaxy S24 will become available in 1-2 weeks after the release of Beta 4, i.e. in the second half of this month.
Currently, the stable version of One UI 7 is only available for the new Galaxy S25 series.
Assuming that One UI 7 for the Galaxy S24 FE will indeed be released on 31 March, the update for the S24, S24+, and S24 Ultra will probably come even earlier. Since it was these three that took part in the beta testing, it is logical that the Fan Edition version will not receive the update first.
Samsung has officially announced that the Galaxy S21 series will no longer receive monthly security updates. The Galaxy S21, Galaxy S21+ and Galaxy S21 Ultra models will be updated only 4 times a year, i.e. quarterly.
Source: Samsung