When iOS 15 was first unveiled, Apple announced that the upgrade wouldn’t be mandatory for people who wanted to stick with iOS 14. The new operating system would still be offered to every device that could run it, but iOS 14 would keep getting security updates so that people wouldn’t be left vulnerable just because they were happy with the performance and stability of the OS they were already running.

But last week, 9to5Mac and others noticed that the iOS 14.8.1 update had stopped being offered to phones running iOS 14. The only upgrade option was for the latest version of iOS 15, currently 15.2.1. We’ve confirmed with Apple that this isn’t an error; iOS 14 is no longer being updated, and anyone who wants the latest security updates will also need to accept the other changes in iOS 15.

Apple told Ars that it always intended the iOS 14 security update option to be temporary. Essentially, people could have a short grace period while Apple worked out the worst of the new operating system’s early bugs, but you would always eventually have to upgrade to stay patched.

That does make a certain kind of sense, but the company never actually made it explicit before now. The features page for iOS 15 me