Android 9.0 Pie is now available for the OnePlus 6. It's rolling out as part of the phone's update to OxygenOS 9.0, which brings with it a few other notable improvements, like a new Do Not Disturb mode and an improved Gaming Mode.
Here's OnePlus's changelog for the update:
Updated system to Android™ 9.0 Pie
Do Not Disturb mode
New Gaming mode 3.0
As with most OnePlus updates, this OxygenOS 9.0 rollout will be staged. That means that only a limited number of OnePlus 6 owners will get it today, allowing OnePlus to make sure that there are no major bugs before rolling it out to everyone else. A broader rollout will happen in a few days.
Once your OnePlus 6 gets its slice of Android Pie, be sure to let us know what you think of it!