An SEO professional asked John about whether or not certain Google algorithm updates become part of the core updates, and are live in spite of no announcements?
John replied that it’s not a good idea to assume that updates are not live in other regions, just because there hasn’t been a specific announcement of any core update or other update.
Google does not tend to announce every single update that occurs, and updates that are announced individually tend to not be a part of the core updates.
Don’t tie things like the product reviews update to something like a core update.
It’s likely as well that the product reviews update has rolled out to other regions despite there being absolutely no specific announcement of something like this having occurred.
He also added that the goal is always to roll these types of updates out globally, as much as possible for any update that they roll out.
This happens at approximately the 11:15 mark in the video.