TomTom plans to unleash a long-awaited iPhone app this summer that will give iPhone 3G S users turn-by-turn spoken directions. Announced by TomTom co-founder and CTO Peter Frans Pauwels at the Apple Worldwide Developer’s Conference, the app will work alongside a new car mounting kit that will be available through TomTom. The mounting kit provides a speaker and microphone for the iPhone and makes it possible to mount the iPhone on the windshield. The mount uses TomTom’s twist and lock mount that can be folded