Sony Xperia XZ2 Premium receiving Android 9.0 Pie
The build number of the new software is 52.0.A.3.84 and interestingly enough, it's just 210MB big. Like the other Xperia phones that got the update last week, the XZ2 Premium won't be getting the gesture-based navigation that usually comes with the Pie, but you can benefit from Xperia XZ3's camera UI. Supposedly, it can also improve the overall camera quality.
For now, we don't know what regions are getting the update, but if all goes smoothly it should go global pretty quickly.