Apple has invited the press to the presentation of the next version of its system of mobile devices, the iPhone OS. Version 4.0 will be presented, a system that will be usable on the iPhone, iPod touch, but also novelty iPad. Some sources also speak of the announcement of a probable new iPhone 3G version dating back to June 2009 and Apple tends to update their phone every year.

iPhone OS 4, how it works
The iPhone OS 4.0 should provide, among other things, multitasking applications do not come from Apple. This new version could be skipped the first generation of devices from Apple and the price will obviously depending on the device: the update is free for iPhone 3G and iPad and pay for the iPod touch.