We've seen TomTom for iPhone previewed during June's WWDC keynote. There have been a few turn-by-turn navigation apps that beat it to the starting line – AT&T Navigator being one that stands out. Not becoming just another GPS app on the iPhone, TomTom is combining its intuitive interface and an optional mount accessory to turn it into a competitive standalone GPS unit. Although it's been heard that it'll be expected “later this summer,” Macworld recently got some more information from TomTom's Vice President of Marketing Development; Tom Murray. There are some challenges that need to be overcome in order to make the experience on the iPhone comparable to standalone TomTom units. Murray did go on to say that the company is leaning towards a set price for the app and maps; rather than going the monthly subscription route. No word yet whether or not the download will be restricted to Wi-Fi connection – it's looking to be at approximately 1GB on the App Store. It'll come with the latest TeleAtlas maps for your area with either North America or Europe initially offered. We can't complain about the expected late summer release. So iPhone owners who passed on other GPS navigation apps won't need to wait long for this one.