OnePlus released the first Open Beta of OxygenOS 11 based on Android 11 for the OnePlus 6 and 6T in early July, ahead of the previously promised schedule, and there has been a second build outed in the meantime. Today the third Open Beta is going out for these two phones, based on Android 11 of course with OxygenOS 11 on top. Open Beta 3 optimizes background process management to improve battery life, fixes the failure to enable VoWiFi, fixes the fact that the Work-Life Balance feature didn't work when the screen was locked, enhances the smoothness of video playback in the YouTube app, and...
Source: https://www.gsmarena.com/oneplus_6_and_6t_get_a_new_android_11_open_beta-news-50446.php