If you plan to update to iOS 11 this fall when it's available, just be aware that it will no longer support 32-bit apps. What this means to you, possibly, is that you might have some apps that you use frequently that will no longer work until they're upgraded to 64-bit. You can find out which apps will no longer be supported by going to Settings>General>About>Applications. There you'll see the apps that are presently not compatible with iOS 11.
For example, both my iPhone and iPad have quite a list of apps that will no longer work if they're not upgraded to 64-bit. I'll just patiently wait and see what the developers of these apps decide to do.