OnePlus has already confirmed that the "Flagship Killer" OnePlus 3 and OnePlus 3T won't be getting any major OS updates after Android O.
Now, OnePlus has started rolling out the Official Android 8.0.0 Oreo update to OnePlus 3 Closed beta users. This means that the Oreo won't be coming to all users at once, but selected users will get the update for testing purpose.
The company says that it will continue testing the updates. Most major aspects of the phone are not working as expected (such as the NFC, WiFi, hotspot, and Bluetooth.)