Apple has announced that its next-generation mobile OS, iOS 5, will launch to the public on October 12. It will be a free upgrade for the iPad, iPad 2, iPhone 4, iPhone 3GS, and the third- and fourth-generation iPod touches.
iOS 5 includes a number of new features, including a revamped notifications system, improved Camera app, iMessages, and many other tweaks and improvements.
The "gold master" version of iOS 5 has not yet been released as of this writing, but it will likely be released today if the public release is due eight days from today.
Apple iPad Air 2
Apple iPhone 6s