Nokia 6 smartphone was launched with Android 7.0 out of the box. Now it starts getting new Android 7.1.1 based update. New updated comes with latest security update of April month and weights around 370 MB in size.
The latest Android 7.1.1 update brings support for 4G/3G dual SIM dual standby and enhanced power saving as well as improved background management. It seems like the Nokia USB driver and preload apps have also been updated. Usually, OTA updates take some to reach out all devices. If you are owning Nokia 6 smartphone you can check it manuaaly by visiting setting menu > software updates.