For those of you who have been impatiently patiently waiting for the iOS 4.0 upgrade to your iPhone or iPod Touch, you can now download it without being a developer.  Simply make your way to iTunes and hit update and you should be on your way.

The two major features of the upgrade are multi-tasking and folders.  You now can switch between apps by simply double-tapping the home button and selecting your program.  You can also drag your app on a similar app such as a game and the OS will make a folder for you all by itself.

There are other upgrades to the photo app, camera and other tucked away places making this a must have upgrade.  Just don’t jump on it yet if you have an unlocked or jailbroken phone as a simple way of restoring the jailbreak and unlock is not yet available.

You can see an early preview of the features [Here] on