It hasn't been that long since the OnePlus 3 got its last software update, but today a new one has started rolling out. If you own the OnePlus 3 you'll be receiving OxygenOS 3.2.2 over-the-air within the next few days, if you haven't already. As usual, the rollout is incremental, and that's why all devices aren't receiving this at the same time.
This update improves notification management when in Doze Mode, addresses certain bugs and issues with the alert slider, and disables the fingerprint scanner while the phone is in your pocket.
It also adds an NFC toggle in Quick Settings, improves noise cancellation in video recording, updates the 4K video capture codec, and even comes with the latest security patches. Some "various optimizations" are in too, but they haven't been detailed further.