iOS 4 is now available for download through iTunes, adding over a hundred new features to the iPhone and iPod Touch, including multitasking. If you’ve got an iPhone 3G, 3GS or iPod Touch (second gen or above), plug your iDevice into your USB port and hit the “Update” button in iTunes now.
Busy updating? You can also now officially grab iBooks for iPhone through the App Store as well.
What do you think of the new OS? Let us know in the comments.