The recently launched Nokia Android One smartphones, the Nokia 6.1 (or 6 2018 or the new Nokia 6) and the Nokia 7 Plus today received a new Android Oreo software update under the build number V2.22A. The update brings a new version of Android and improvements in the UI, system stability and performance. The May security update is reportedly also there, as well as support for Dual VoLTE. At the moment, Dual VoLTE is confirmed for the Nokia 6.1 in India thanks to a user posting it via Twitter.
If you do have a dual SIM Nokia 6.1 and 7 plus (or a single SIM), do check for the update via Settings->System->System update and tell us if you installed the update, how it went and did you notice any changes (like Dual VoLTE support). 🙂