Tim Cook openly apologized about the sub-par iOS 6 maps. He suggested a whole bunch of 3rd party apps instead. Google reportedly did not hand over the necessary data for turn-by-turn directions which prompted Apple to release their own mapping solution.
Apple v/s Scout : My experiences
I personally used Scout app (by TeleNav) when it was free for a month. I launched it on the iPhone 5 and lo behold, Scout offered a free year of turn-by-turn based navigation which is voice enabled. It is pretty neat and gets the job …

Yep, the guys at GearLive were not spoofing and it came to life – 1.1.3 available as an update starting today! All the features shown in Gearlive’s video are now available ‘Officially’!!A run down of all the features ::Send SMS messages to multiple people. ( Not new for 1.1.2 hacked iPhones!)Google Maps pinpoints locations using data collected from WiFi hotspots