Nokia 6 (TA-1033) and Nokia 5 (TA-2024) started receiving the Google Security patch for October. The update for Nokia 6 is 120.2 MB large, and it just brings the security patch. The update for Nokia 5 also brings just a security patch but is a bit smaller (116.4 MB). The installation was rather quick and with no problems.
The update seems to be global since users of these two popular devices around the world are reporting its availability. If you experience any kind of installation problem, please tell us in the comment section, so the others know.