Apple Releases iOS 5 with Notification Center, iMessage, Twitter, and More

In line with Apple's announced schedule calling for a release today, iOS 5 is now available to download for iPad, iPhone, and iPod touch users. Users can obtain the update by connecting their devices to iTunes and clicking the "Check for Update" button. It may take a few minutes for the update to propagate to all users, however. 


iOS 5 brings more than 200 new features, including Notification Center, iMessage, Newsstand, Reminders, and systemwide Twitter integration. 


iOS 5 is compatible with the iPad 2, original iPad, iPhone 4, iPhone 3GS, and third- and fourth-generation iPod touch. It will also ship on the iPhone 4S, which launches on Friday. An iOS 5-based version of the Apple TV software, labeled software version 4.4, is also available.