I was guessing that this was going to happen either this or next month, and it has. In an announcement dated September 27, 2022, IBM revealed that they will discontinue support for release IBM i 7.3 on September 30, 2023.
7.3 was released on April 15, 2016. With it going off support on September 30, 2023, it means that it will have been an active release for seven years and five and a half months.
You can read the full announcement, including the other product coming to end-of-life, here.
If you have a Power8 or higher and you are on IBM i 7.3 you need to start finalizing your plans to update your operating system to either 7.4 or 7.5.
