Next to HMD Global who confirmed Android O for some of it’s Nokia devices, OnePlus CEO just announced on Twitter that the OnePlus 3 and OnePlus 3T will both get updated to Android O.
A lot of you have been asking, so I'm proud to say Android O will come to OnePlus 3 and 3T.
— Pete Lau (@petelau2007) May 31, 2017
This is great news for the owners of these devices and OnePlus keeps its promise to keep supporting these devices even after discontinuing the manufacturing of these devices.
The exact moment of the update to roll out is still unknown, Android O is expected to be available from the 3rd quarter of this year.