I have several apps where I can use geocoding. Currently we relay on google's services, but now we can also use Apple's. Simply use the CLGeocoderMBS class. There you can have an address resolved to placemarks or also reverse geocode by looking up a geographical location. Or in other words, passing in "Kölner Dom", you get a record with details like city, country, latitude and longitude. But also by passing in longitude/latitude, the service can tell you what's there.
I think this is a great addition and I certainly have a few clients who can use that in their application for address lookup, address correction, geo mapping and coordinate tagging.
The example project will be included with new plugins in the next days.