Update: Sprint's Galaxy S7/S7 edge have also started getting the Oreo update. The update weighs in at around 1.3GB, and arrives as versions G930PVPU6CRE7 and G935PVPU6CRE7, respectively. With this, three out of Big Four US carriers - Sprint, AT&T, and Verizon - have now rolled out the update.
Original story follows:
The time has finally come for AT&T to send out the Android 8.0 Oreo update to the Samsung Galaxy S7 active. This model, as you may remember, was exclusive to this particular carrier, pairing the specs of the vanilla S7 with a rugged build.
The rollout has started going out today, and as always we assume it's going to be phased. Of course you can always try manually checking for it to see if it shows up. Regardless, you should receive the update notification within the next few days. Once you do, you'll have to deal with a 1.5GB download.
The new version brings with it the April security patch level, which is more than two and a half months old at this point. But hey, at least you now have Oreo! The build number for the update is R16NW.G891AUCU3CRE7.
Other brands and one of if not the most advanced ui are two different things.