24-09-2015 01:51 AM
I think the question is more relevant when we put the age/model of your device in the picture. The newest device always get to benefit from such updates, but sometimes luck is out for the older models.
24-09-2015 12:20 PM
ios 9.0.1 just released. i updated both my 5s and ipad mini to latest ios and so far they r smooth like ios 8, although ios7 are smoother. latest ios did offered some additional features
24-09-2015 12:24 PM
Is your iPad mini the first generation? For a device of about 3 years old, I'm uncertain if the latest update will make it slower or not.