Some Samsung Galaxy S10 5G and Galaxy S10e users in Switzerland have confirmed that they have received the Android 11-based One UI 3.0 update on their devices. However, it may take a few days for the update to make its way to other regions.
https://www.notebookcheck.net/One-UI-3-0-update-now-available-for-the-Samsung-Galaxy-S10-series.513767.0.html