AT&T has started rolling out the new update for Samsung Galaxy S8 Active units on its network. The update comes with a build number G892AUCU2BRCS and brings Android Oreo.
The update comes with security fixes for the month of March. The update is rolling out through OTA, so it may take some time to reach each and every device. There is no information on when Galaxy S8 T-mobile and Sprint models will be getting the update.