After killing bugs with the November Security patch on Nokia 7 plus just a few days ago, Nokia Mobile has also rolled out the latest December 2018 Android Security update for the Nokia 7 plus. The update only brings the latest December Security patch and is just 98.6MB in size.
The update has been rolled out in India and should slowly make its way to other markets which might take some time. You will receive the notification once the update is available on your phone. You can also manually check for the update by going to Settings > System > System Updates. You can learn more about the monthly security updates by visiting the Android Security Bulletin.