The iPhone's ability to multitask could mean a new generation of apps for iPhone 4, which will certainly include a new TomTom app.According to TechRadar, TomTom has already announced that it will release a new version of its iPhone app takes advantage of that very thing. So turn-by-turn navigation as you check your email. Don't know about you, but we're hoping that's limited to pedestrians only."The current version of the TomTom app for iPhone (version 1.3) is available for purchase via the App Store, and both current and new owners of the app will be able to update to the new version immediately upon its availability for no additional charge," said a company statement."As an additional incentive for new users to start using the application, TomTom is currently offering the UK& Ireland and Western Europe versions of the app at a discounted price of £54.99 and £42.99 respectively.""As TomTom continues to innovate and to take advantage of new capabilities of the iOS 4, users of the TomTom app will benefit from the combination of TomTom's most advanced and acclaimed features and the iPhone's unique functionality," said Tom Murray, senior vice president of market development for TomTom Inc."We are pleased to integrate multitasking capabilities to the newest version of our TomTom app, and to be able to ensure that users can now enjoy other iPhone features while they continue to receive the best routing directions from their TomTom application."So in other words, don't stop buying our app ahead of the new one, as you can have that as a free upgrade. Sounds like good business to us.