As well as this morning's redesigned sports watches, TomTom has just launched a refreshed version of its GO GPS unit for drivers who still prefer a dedicated sat nav. The hardware comes with interactive 3D maps, a lifetime's supply of real-time traffic information and up to four free map downloads a year. It'll be available in 4.3-, 5- or 6-inch models, and purchasers will also get a free three-month trial of the Dutch firm's speed camera warning system. There's no word on pricing or availability yet -- everything we have is in the pr
