I have an iPad app (XCode 6.1, iOS 8.1 and Storyboards). I am currently modifying the app to be able to sync it to other devices using iCloud.
My question is: are all .plist files part of the application bundle? (i.e. do I have to be concerned that if the app is sync'd between devices, do the .plist file(s) go with the app bundle or do I have to move them into the iCloud with the Core Data store)?
if you save the .plist files into the Documents folder from the app explicitly then those files won't be part of the bundle.
every other file which is archived into the .ipa file when you distribute it, they are permanent part of the bundle.
NOTE: you can read more about the bundle on the official site, e.g. here.