https://wccftech.com/release-galaxy-s8-android-8-0-oreo-beta/

It’s been a week since the release of Galaxy S8+ ( Amazon, $742.00) Android 8.0 Oreo Beta. It was launched initially in the United States, United Kingdom and South Korea. Samsung has now rolled out the second beta firmware for its Galaxy S8 ( Amazon, $718.99) and S8+. This event took place today and it has been rolled out in the United Kingdom. It will soon be available in other supported markets as well. The second beta firmware has the version number G950FXXU1ZQK4.

So the question that remains is that what does this beta version have to offer? This second Galaxy S8 Android 8.0 Oreo beta firmware has the October security patch and has a more improved and stable DeX mode. Another thing mentioned in the changelog is that the new version is offering a more stable Launcher as well. Other than these very technical changes, with the new beta version you will get new clock styles for the lock screen and Always On Display.