“Every iOS release has its marquee feature, and with iOS 6 it’s unquestionably Maps,” Dan Moren reports for Macworld. “The app has gotten a in-depth makeover, perhaps the most thorough ever to be applied to one of iOS’s built-in applications.”

“The bow-to-stern overhaul starts deep under the hood, where Apple has replaced the mapping engine that in every previous version of iOS was provided by Google,” Moren reports. “In its place, Apple has rolled its own solution, supported by mapping data from GPS maker Tom Tom, OpenStreetMap, and a cast of thousands.”

Moren reports, “As you might expect, such an all-encompassing update means new features, the disappearance of old ones, and plenty of changes in the way things have been done to date.”

Much more in the full review here.