It is already confirmed that the upcoming iPhone 5S will be an upgraded model of previous release. The fully redesigned Apple iPhone 6 running on iOS8 will release in September 2014.
It is already reported in earlier that Apple began working on next biggest mobile operating system iOS7, will be a completely redesigned OS,. Apple iOS7 will release in WWDC 2013. completely redesigned iPhone 6 will release next year support by iOS8 operating system.
The analyst thinks that Apple will bring bigger screen, new improved camera and made storage bump to 128GB in new iPhone 6. Other than the hardware specifications we expected more from iOS8, will have new application environments. You can expect improved Siri, advanced notification center, redesigned music player, app store, iCloud, new security features within iOS8.
For this year Apple will bring iPhone 5S in September, upgraded model of iPhone 5, no change within screen size. Apple iPhone 5S will run on iOS7 operating system have improved camera and new security system.
Recently we are heard about the iPhone mini rumors but it is not confirmed by the authorities. The reported Apple iPhone 6 thinks to be revealed in the middle of 2014. Also the next versions of iPad series and other iDevices are introduced at the same time.