In December 2018, the company brought the OxygenOS 9.0 update for both smartphones which also includes December 2018 security patch. However, the latest OxygenOS 9.0.1 update did not mention any security patch. So maybe OnePlus bring another update with January security patch.
The OxygenOS 9.0.1 is an OTA update so will reach a small number of users starting today. A wider roll-out is expected in the coming days. You can check the full changelog below:
- Improved stability for Wi-Fi connection
- Optimized sRGB display mode
- Optimized Reading mode
- Fixed issue with 4G VoLTE toggle missing
- Fixed random reboots when Screen Casting
Some Indian users also reported on the OnePlus forum that they also got new features with the update like front camera portrait mode and automatically call receive when you take close to the ear, and more.