https://wccftech.com/today-in-android-oneplus-3-and-3t-get-oxygenos-5-0-4-update-and-more/

The OnePlus 3 and 3T still receive timely updates and security patches, despite their age. However, Oreo is very likely the end of the road for both 2016 flagships. Users will have to look for community-driven alternatives such as Lineage OS if they want to get a taste of Android P. Thankfully, OnePlus still manages to eke out an occasional update or two for the devices. Today, the OnePlus 3 and 3T received a minor update. Here is the full changelog:

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