Oneplus 9 OxygenOS 11.2.9.9 software update with September 2021 security patch, with few fixes and stability improvements and newly added XPan Mode.
The XPan mode is famously known from Hasselblad, After the partnership between Hasselblad and OnePlus this is the first time we are seeing some real collaboration between the two companies.
-->> update released on 17th September 2021
The XPan was an extremely unique camera, providing the advantages of the 35mm format but also the ability to swiftly change to full panorama format without having to change the film. The XPan utilized a dual-format, producing both full panoramas 24x65mm format in addition to conventional 24x36mm format on the exact same film. It was the first dual-format 35mm camera on the market that expanded the format instead of masking it, making sure that every exposure utilized the full area of the film.

Related: Oneplus Community Page
Credits: Twitter User
This is a Software update for the OnePlus 9 and not the major/stable OS update as it already has an Android 11 OS.
The OnePlus 9 will receive three years of major OS updates and four years of Security updates.
Therefore, Android 12 will be the first major OS update on this device and it is also eligible to be on the Android 13 and Android 14 update list as well.
Check here >>> OnePlus Android 12 update list
The OnePlus 9 Software Update (OxygenOS 11.2.9.9 update) is currently rolling out to some OnePlus 9 users. But, it is soon expected to be rolled out to all the users soon.
Once the update is available on your device, you can head over to Settings >> About Phone >> Software Update section to update your OnePlus 9
For more OnePlus Android updates please download our android app – available on the Play Store