Apple has just announced the iOS 7 update will become available on all compatible iGadgets on September 18. The update will be distributed for free, of course.
(http://cdn.gsmarena.com/vv/newsimg/13/09/apple-ios7-date/gsmarena_002.jpg)
The iOS 7 is compatible with iPhone 4 and above, iPad 2 and above, iPad mini and iPod Touch 5th generation.
(http://cdn.gsmarena.com/vv/newsimg/13/09/apple-ios7-date/gsmarena_003.jpg)
Apple has also announced it will supply all iOS 7 devices with iPhoto, iMovie, Pages, Numbers and Keynote apps for free.
Source (http://www.theverge.com/)
GSMArena.com