Samsung has started beta testing One UI 3.0 in Europe. Testing began in South Korea and the US last month and remains limited to the Galaxy S20 series. The S20 FE is not eligible for One UI 3.0 beta yet though, and you must have an unlocked S20, S20 Plus or S20 Ultra to participate.
https://www.notebookcheck.net/Samsung-commences-One-UI-3-0-beta-testing-in-Europe.498039.0.html