The Samsung Galaxy S7 phones were released three years ago, and have now entered their last year of software support. The flagships received two major updates as promised and have now been relegated from the monthly update schedule to a quarterly one.
https://www.notebookcheck.net/The-Samsung-Galaxy-S7-and-Note-FE-have-been-relegated-to-a-quarterly-security-patch-schedule.415607.0.html