Per ComputerWorld, starting in 2018 and really getting underway by 2019, Android apps in the Google Play Store will be required to target new Android OS versions. Gradually, older phones with older Android OS’s may not be able to run new and updated apps.
The problem is compounded by many phone companies never releasing updated versions of Android, which will have the effect of gradually obsoleting perfectly good smart phones and forcing users to buy new phones.
