Keep an Eye Out for App Updates
If you want the best possible Android Oreo experience you'll want to download the latest app updates from Samsung and third-party developers.
Samsung's already starting to update its applications (Samsung Pay, Samsung VR, Samsung Music) with support for the Galaxy Note 8's Android 8.0 Oreo update.
These updates are essential if you plan on using Samsung's apps and services immediately after you download Android 8.0 Oreo to your device.
If you don't download them, your apps might not work properly while you're running Android 8.0 Oreo on your Galaxy Note 8.