Apple did put up a bunch of mapping-related job postings recently, but so far none of them have been that explicit in mentioning that it will be targeting an enhanced version of the Maps app. The company does seem to be serious in making major changes for iOS 5, considering the app has evolved on a much slower scale than expected since the iPhone was first released four years ago. Among them is Google’s Maps Navigation, which has long been promised to arrive on the iOS platform but sadly, remains an Android exclusive until today.
There is a chance that Apple might want to do away with their dependence on Google Maps, but such speculation would need more concrete evidence before it becomes official.