Samsung Galaxy S8 and S8+ has already received Android Oreo update. Now Samsung Galaxy S8 Active started to receive Android Oreo update and the update is currently rolling out to devices in AT&T networks.
Update weighs around 1.2GB in size and carries the build number R16NW.G892AUCU2BRC5. Update brings the Samsung’s latest UI, Samsung Experience UI 9.0 on top of Android Oreo 8.0. It will bring all the features from Android Oreo and carries the latest March 2018 Android security patch.