Samsung takes the Galaxy S9 series off its supported devices list
The Galaxy S9 and S9 Plus (or S9+) have not been the OEM's flagship for 3 generations now; nevertheless, they have been getting new security updates directly from Samsung, if only on a quarterly basis. However, now that the flagships have passed their fourth birthdays in 2022, they have been removed from this list.
This leaves the Galaxy Note 9 as the oldest flagship left on Samsung's Quarterly Security Updates list. Meanwhile, the S10 series is also now to be found on this list. It is a slight shame to see the Galaxy S9 series' discontinuation set in stone like this: its choice of processors (the Exynos 9810 and Snapdragon 845) may have been getting old, but they still had 1440p Super AMOLED displays and were the last Samsung flagships to launch without a punch-hole.
Then again, the S9 and S9+ (which can be found on Amazon for as little as US$175 today) may not be destined for the scrapheap quite yet. The development of custom Android ROMs for both devices is still going strong, which may allow more tech-savvy users to get one of many Android 12 versions onto the phones in place of the One UI build on which their full official software support ended.