How to develop same App for iOS8 and iOS9 in parallel and switch to iOS9
when it is live?
I have an App on AppStore designed with Objective-C with name MyApp.
Now I want to modernize the App and basically to create it from
scratch for iOS 9 and using Swift. For that I need to create new project
with a new name say MyNewApp. It needs to be tested on different devices,
etc. as usual.
When the MyNewApp is ready and when iOS9 is live I want MyNewApp
to be distributed as MyApp with it original ID's certificates, etc.
That way I will have a stable version for iOS8 to be able to do little fixes and
small updates to the live App Store and when iOS9 is ready to switch the code
and distribute the new version.
How is recommended way to achieve this?