Oneplus 3 and 3T were star devices for Oneplus and they helped establish Oneplus reputation as a flagship device without hurting the pocket of customers.
But Oneplus team is always on toes and working to provide even better service and latest Oxygen OS 5.0 shows how dedicated they are as it brings Oreo goodness to Oneplus 3 and 3T.
Currently, only a handful of devices are receiving the notification for an update as with any major updates which are rolled out in phases and other unlucky users may have to wait another few days.
New update bumps Android version to 8.0 and brings along all new Setting, reworked Quick toggles, under hood improvements, launcher design changes, new picture in picture mode and support for parallel apps.
Source: Oneplus Forum