Facebook just announced they will enable 3rd party apps to access your phone number and address information through their developer blog. The reason you haven’t heard about this is because Facebook is giving very little notice to this announcement. Be very careful what apps you allow access to your profile.
If you see a Facebook application that is asking for the permission above “Access my contact information”, I highly recommend you don’t accept. Unless of course you willingly know it’s about to check your mobile number and/or address. But if a game for example wants access to your address information, then that doesn’t make any sense at all.