While One UI 3.0 is being finalized for the Samsung Galaxy S20, some work needs to be done with the Galaxy S10 series. The Korean company has rolled out the second beta of One UI 3.0 for the Galaxy S10 series. It was initially supposed to come out last week, but it got delayed. The countries getting the update first are Korea, India, and the UK. If you're part of the beta and have an S10 device, you can check the update by heading to Settings > Software update and download it from there.
This update (version ZTL8) brings fixes to problems like those found in the Members app and Home UI being stuck in a restart loop. It offers a better camera experience, and unlocking using a fingerprint is finally possible. The stable version is expected to roll out in January, at least in some regions. The Galaxy Note10 series' One UI 3.0 beta is also coming soon. It was supposed to roll out last week as well, but it got delayed.
Source: GSMArena