Turn by turn navigation was available in iOS 6 Beta 1, 2 & 3 with iPhone 4 (no voice navigation) in Kuwait. But now missing in the final release. Problem with local regulation?
Among other 56 countries with turn-by-turn navigation, seems Kuwait won't get this feature in the final release. Australia get the same fate, but with some clues here.
Before, Australia had turn-by-turn navigation feature in the beta version.