I found this iOS version history - Wikipedia and I will stop upgrading when I see they drop the 5s.
Apple announced at WWDC on Monday that iPhone 6S and newer will be getting the iOS 13 update this September. The iPhone 5S and 6/6Plus will not receive any iOS updates past the final update of iOS 12.I am glad I did the upgrade when I did because I see the quit supporting the 5s.
You're welcome.I have an iphone 5s. As long as my phone keeps working for a long time to come, I am not fussed about the updates. Thank you for posting, scifan57.