Apple announced the highly anticipated update to iPhone OS, dubbed as iPhone OS 4 today at an event held at their headquarters in Cupertino. Version 4 brings more than 100 new features and over 1500 new APIs for both users and developers respectively. Multitasking, which was one of the most requested feature has also been added.

iPhone OS 4

iPhone OS 4

Here is a hands-on video which shows off iPhone OS 4 in action, multitasking in particular.

iPhone OS 4 Beta is now available for download as well. The final version of iPhone OS 4 will debut with the next-gen iPhone at this year’s WWDC conference, which will be held some time in June/July this year.

iPhone OS 4 is fully supported on iPhone 3GS and iPod touch 3G. iPhone 3G and iPod touch 2G will run most of the things except for multitasking. An iPad version of iPhone OS 4 is expected to be released this fall. [Images via BGR, video via ithinkdifferent]

P.S. We haven’t got our hands on iPhone OS 4 yet, but we’ll get hold of it soon. We will be posting our own hands-on videos and screenshots as soon as we get it.

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