IOS 7
iOS 7 Beta 1 was released to developers on June 10, 2013. It supported the iPhone 4 and later, as well as the iPod Touch (5th generation). iOS 7 Beta 2 was released on June 24, 2013, two weeks after the first beta was released. It added support for the iPad 2 as well as the iPad Mini. Two weeks later, iOS 7 Beta 3 was released on July 8, 2013. Until iOS 7 Beta 4, a new beta was being released every two weeks. iOS 7 Beta 4 was released on July 29. 2013, three weeks after the third beta was released. The fifth beta, iOS 7 Beta 5, was released on August 15, 2013, and brought many fixes and improvements.