The update begun rolling out last week in Taiwan, but it seems it has quickly moved onto the UK, Germany and France too.
It's currently unclear when the update will be available for those who have the phone in the US. Sony doesn't sell the Xperia 1 II in Australia.
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The update comes with the latest December 2020 security patch, and for many it has been just under 1GB in size. Those in the UK have received a build called 58.1.A.0.926 but it may slightly differ in title when you receive yours.
Other tweaks include new wallpapers, a smart home control panel appearing when you long press the power button and a variety of other changes within the settings.
What about other phones?
Other Sony handsets are set to follow as the company has previously released a roadmap for its updates where it expects the Sony Xperia 5 II and Xperia 10 II to get the upgrade by the end of January next year.
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James is Managing Editor for Android Police. Previously, he was Senior Phones Editor for TechRadar, and he has covered smartphones and the mobile space for the best part of a decade bringing you news on all the big announcements from top manufacturers making mobile phones and other portable gadgets. James is often testing out and reviewing the latest and greatest mobile phones, smartwatches, tablets, virtual reality headsets, fitness trackers and more. He once fell over.