18 May 2018
UPDATE (May 17th, 2018):
Samsung has officially paused the Android Oreo update rollout for Galaxy S7/S7 edge users in the United Kingdom. The decision has been taken after a few of the users complained about random reboots after the update installation. The team said that even though the number of affected users is currently very small, they want to minimize the overall impact which is why update rollout has been halted for the time being. It will be resumed once the cause of the issue will be discovered and fixed but there is no specific timeline as of now.
If you are one of the users who experienced the issue, you can refer the screenshot added below to read about some troubleshooting tips.
Original (May 1st, 2018)
After a very long wait, Samsung has finally started to roll out Android 8.0 Oreo update for the Galaxy S7 and Galaxy S7 edge. The update is currently being released in the United Kingdom which means it should become available in other regions sooner than later.
It is an over-the-air (OTA) roll out which means once the update becomes available for your particular Galaxy S7/S7 edge unit, you will receive an update notification. Tapping on the same will start the downloading process and once it is completed, you will be able to install it. The update is currently unavailable via SmartSwitch which means your best option is to wait for the update notification. Otherwise, you can always try to look for the update manually by visiting phone's Settings.
The update weighs over 1GB in size which is the reason we would suggest connecting to a WiFi for the download purposes. Once you have installed the update, you should receive all the major Android Oreo features. Some of these include new notification management, notification dots, split-screen support, and Picture-in-Picture mode.
For all other Galaxy S7 users residing outside the UK, the update should arrive anytime in the near future. While Samsung has not shared any official timeline yet, we will keep you updated on the latest developments regarding the same.