Magellan has released an update to its RoadMate turn-by-turn GPS navigation app for the iPhone adding support for background navigation on multitasking-capable iOS 4 devices, traffic information and several other new features. RoadMate 1.3 now allows iPhone 3GS and iPhone 4 users to continue to receive voice guidance instructions while using another application and provides uninterrupted navigation even while on a phone call. The new version also…
