iOS 7 is still currently in beta and things may change in the official release, but it appears that Apple is tracking your every move in iOS 7 with your GPS and mapping your data. By default the system service “Frequent Locations” is on. This allows your iPhone to learn places you frequently visit in order to provide useful location-related information. Apple also uses this data to “Improve Maps.”
Luckily you have the option to turn off “Frequent Locations” and and “Improve Maps”. To do this, you go to Settings –> Privacy –> Location Services –> System Services. From there you just shut it off and Apple will no longer Map your location.
This could be a big security concert if the wrong people get their hands on this information. If you are paranoid and do not want to be tracked make sure you shut this feature off. The concept is cool to see where you have been, but not cool when other have access to this data and are spying on you.