Nokia 7, which is exclusive to China, is receiving the June security patch. The update carries version number 224C.B01 & sized at 85MB. There are no extra enhancements mentioned in the change-log.
Nokia Mobile is doing a commendable job in delivering the security updates month after month. The Nokia 7 has received security patches and Android OS updates for over 8 months already. The device isn’t part of the Android One program and it is even rarer to see OEMs pushing security updates in China.
If you have a Nokia 7, then you can go to Settings > System > About > System update to manually check for updates.