The elusive Apple iPhone will hit US retail stores within a month, but manufacturing contracts have already been signed for iPhone 2. Its reported that a Taiwanese manufacturer, Quanta, had secured contracts to start producing the iPhone’s successor from September. Quanta – the world’s largest laptop PC manufacturer – already produces MacBook laptops and iPods for Apple, in addition to a range of laptops for both Dell and HP. And the Treo smartphone maker, Palm, said today it would unveil its own answer to iPhone – “a new category of mobile device”. More scoop on this buzz.