The 2017 flagship device Nokia 8 started receiving a new monthly update. The update for October brings a new version of Android 9 Pie (V5.15G), alongside the security patch for October 2019 from Google. The update is 89.8MB in size.
Nokia 5.1 also got the October 2019 security patch, with an update that was 73.2MB in size. According to our update tracker, Nokia 5.1 is the 16th globally available Nokia smartphone that started receiving the October update, out of 23, now 25 globally available Nokia smartphones including Nokia 6.2 and Nokia 7.2.
To check if the update is available for your device head to Settings->System-System Updates.