I am working on a project which was developed during iOS 7 and in it NSURLConnection and ABAddressBook are used,I have to add some features in it.But have a query will the app get rejected coz of NSURLConnection and ABAddressBook.
(Note- It is not version control app.App will be submitted with new bundle id and version)
You are using the API's which are provided by Apple to use publicly and not the private one. So, There are no chances to reject your app if You are using ABAddressBook & NSURLConnection.
But, Please make sure that other features that You wanted to add does not violate the Apple's guidelines..