Many analysts suggest Apple will release the Iphone 6 in June 2014, around the same time period when Samsung releases the S5. Having upgraded to the 5s for a little more than half a year, would you be mad having to upgrade so early? Personally I think June would be a good move for Apple. With the release of the 5s/5c, Apple regain it's #1 spot as the most activated smartphone. When the GS5 comes out in April/May, Apple will lose it's standing again to android devices if they plan to release the Iphone 6 in September. From a business stand point, releasing it in June would help Apple compete better.