https://wccftech.com/android-10-update-rolling-out-to-more-galaxy-s10-users-in-europe/

The highly-awaited Android 10 update is now rolling out to more users in Europe. It was only available to some participants of the One UI 2.0 beta in Germany. Based on Samsung's official Android 10 roadmap, users would have to wait until January before the software is available in more regions. Scattered reports now indicate that users based in Greece and Slovakia are now receiving Android 10 on their Samsung Galaxy S10.

In Slovakia, the update is only available to carrier-independent devices. It weighs in at about 2GB and is bundled with the December security patch. You can find the full changelog above. A similar update appears to be rolling out in Greece as well.