OnePlus has rolled out the OxygenOS 9.0.11 with the February 2020 security patch for the OnePlus 5 and OnePlus 5T. Both of the smartphones are waiting for the Android 10 update, which is scheduled for the Q2 2020.
According to the screenshot shared by one user, the OxygenOS 10 update might come by end of the May to mid-June. This is said in the Chinese OnePlus community.
This is good news for the OnePlus 5 and OnePlus 5T smartphone users.