https://wccftech.com/android-pie-public-beta-goes-live-for-the-oneplus-5-5t-in-china/

As promised, Android Pie is making its way to the OnePlus 5 and 5T. Like most Chinese OEMs, OnePlus maintains two versions of its Android fork. The Chinese variant—known as HydrogenOS— lacks some of OxygenOS’ features such as Google Play services and support for additional languages. Users outside of China can sideload the China-only ROM, and today OnePlus is now allowing the public to beta test the Android Pie version of HydrogenOS for the OnePlus 5 and the OnePlus 5T. Here is the changelog:

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