The update has started to rollout via OTA and a broader update will be releasing soon. If you want the beta then OxygenOS Open Beta is also available for OnePlus 3T. Before you can apply the update, flashing is a must and there could be a lot of bugs in the beta so, think before loading a beta update.[Source: OnePlus Forums]
Android 7.0 Nougat delivering to OnePlus 3 and 3T
[sgmb id=”1″]OnePlus recently announced that it has started to roll out the OxygenOS 4.0 update to OnePlus 3 and 3T. The OxygenOS 4.0 has one most notable feature/change and that is Android 7.0 Nougat and with it, it has a number of other changes such as new notifications style, multi-window support and a clean and organized Settings menu. In addition to these Status bar icon options and shelf customization is also added in OxygenOs 4.0.