According to a find by 9to5Google, Google might be in the process of changing the way that updates are delivered to Android users. As it works now, updates are pushed through a series of levels before they arrive on your handset. Google develops the changes and makes them available to the manufacturer of your handset. The manufacturer makes their changes and verifies that it does not break the device. The manufacturer either does or does not make the update available to your carrier, who does their own QA testing. Only then are updates made available to the owner of the device.
This incredibly long process is why it can take months from the time a big update is made available until it arrives on your device. Some devices never receive those updates, with manufacturers opting to ignore older handsets entirely. This is one of the problems that Google has tried to address with the Google One platform, which has no manufacturer or carrier overrides, providing a "pure Google experience," similar to what Apple provides with iOS and Microsoft provided with the now defunct Windows Phone and Windows Mobile.
As part of this unification, Google seems to be moving the update process from deep within the settings menu into the Google Play Store. Moving the update process will almost certainly make it a more direct process for users to get notified about, and manually search for, system updates. It might also begin to create some confusion for users, as the process is very different from any other major platform. The only system on the market today that groups app and system updates together is Linus, which has a statistically insignificant user base, making it a foreign concept.
In addition to the potential for confusion, there is the potential for legal issues. By moving the update process into Google Play, it might suggest that Android will now require Google Play and Play Services as part of the system. That will cause problems for manufacturers who have chosen to bypass Google Play and other Play Services in their devices in favor of their own stores, services, and more. If system updates are about to become dependant on Google Play, it will potentially end their platforms. At a time where Google's behaviors are being questioned on a daily basis for antitrust, this could cause them even more trouble, especially in the EU.