http://www.techradar.com/news/heres-another-sign-that-android-oreo-for-the-galaxy-s8-will-be-here-soon

If you're the owner of a Galaxy S8 or Galaxy S8 Plus then you're no doubt wondering exactly when your Android 8.0 Oreo upgrade is coming down the pipe. Well, we're still not completely sure, but there's a new development that hints the update isn't far off now.

SamMobile spotted that the manual for Oreo has been uploaded to Samsung's site in Brazil, a step that has preceded the pushing out of the upgrade for previous versions of Android. It means the Oreo software could be less than a month away now.