The iPad launched just days ago, but already Apple is gearing up to introduce a new version of the iPhone OS as well as a rumored (not to mention expected) new iPhone model. On Thursday, the company will be presenting a sneak peak at the next iPhone OS, just as it did last year. But unlike previous iterations of the iPhone OS, this version, iPhone OS 4.0, is expected to be designed to work on three different machines: the iPhone, iPod Touch and the iPad.





