It's finally here – the new operating system software that enables multitasking on the iPhone, but only if you have a 3GS. Those still running the iPhone 3G won't get multitasking, but will still get app folders, iBooks, improved Mail client, spellchecking, and other improvements. Sadly, those running the iPhone 2G EDGE are now left out in the cold.
Those who want to grab the update will have to update their iTunes software to version 9.2 before it'll be compatible with iOS 4.
Alternatively, those who wish to save the new iOS 4 first can check out the links below:
For iPhone 3GS:
For iPhone 3G: