Steve Jobs has unveiled the latest edition of the iPhone software - cunningly named iPhone 4.0.

The headline feature is the new ability to multi-task, but there appear to be over 100 new features.

These new features include Bluetooth keyboards, the ability to tap to focus on video and 5x digital zoom for the camera.

Steve Jobs said the new iPhone 4.0 software will have seven 'tentpole' features, with multi-tasking the headline grabber.

Bold claims

He claimed: "Now we weren't the first to this [multi-tasking] party, but we're gonna be the best. Just like cut and paste."

Apple said is has offered a number of APIs to developers for multitasking, which now means elements like Skype and location services like TomTom can operate without needing to be constantly in the foreground.

This is achieved by way of a simple pop-up dock, activated by double tapping on the home button, and bringing up four running applications to switch to.

We're still waiting for a UK release date on this new iPhone 4.0 firmware, but we'll update you as we get news.