One of the unique things about Nokia Android smartphones is that Nokia Mobile provides software support for all devices in their lineup, regardless the price. It was a rarity before to see a low end device getting monthly security updates or OS upgrades, but currently the whole Nokia portfolio is on Android Pie, excluding the Nokia 2 that got stuck on Oreo/Nougat for technical reasons, but still receives security updates.
There is also a dedicated site where Nokia Mobile posts for which devices the rollout of an update has been released. That site is usually updated one to two times a month (recently more frequently) and today is one of those days.
If I saw it correctly, the tracker shows that no Nokia phone received the July 2019 security patch before 15th July 2019, which is false, because we have covered user reports (and from our devices) that the Nokia 9, 5 and 6 got the latest July security patch. More details about that can be found in our own update tracker.