OnePlus has not forgotten about its "oldies" OnePlus 6/6T and continues to update them.
What is known
The Chinese manufacturer has released a new version of software for the smartphone. The firmware has been given a build number OxygenOS 184.108.40.206 and weighs more than 2GB. The system has such a big size because the developers have decided to "rebuild" the OS. As for the list of changes, the software has a September security patch, improved power consumption and also gyroscopic sensor sensitivity has been redesigned.
When to wait for
The update is rolling out to smartphones in waves, as usual. If you don't want to wait for your turn, you can download the system via the app Oxygen Updater and install it manually.
Source: OnePlus Forum