OnePlus had promised that it would upgrade the OnePlus 5 and 5T to Android 10, and the company is now delivering on that promise. The first Android 10 Open Beta is now rolling out for the company’s 2017 phones.

source https://gadgets.ndtv.com/mobiles/news/oneplus-5-5t-android-10-oxygenos-open-beta-1-update-2218838