Apple has released security updates for older operating systems in the past. We'll have to wait and see what happens.Unfortunately, it appears that owners of iPads too old to install iOS 11.2.1 are out of luck. My wife's Mini, for example, is stuck at 9.2. I seriously doubt that Apple will release a fix for older devices--their idea of "up to date" is "buy a new one every year." She has no interest in a larger form factor, as the Mini fits neatly into a pocket in her purse.