Update app on the App Store

Question

Here is my scenario:

My app has version X in the app store, then I want to upload version X+1 to the store.

There has been a major change between version X and version X+1. Both apps were using backgroundFetch to do some of the work

Assuming version X was opened, and version X+1 was never opened after downloading, will i still be receiving backgroundFetch events ?

Answer 1

From Apple:

In most cases, the system does not relaunch apps after they are force quit by the user. One exception is location apps, which in iOS 8 and later are relaunched after being force quit by the user. In other cases, though, the user must launch the app explicitly or reboot the device before the app can be launched automatically into the background by the system.

It means the app need to receive backgroundFetch events for X+1.