From IT Media:
According to the survey targeting current iPhone owners, 47.3% say they won’t buy a new iPhone. 39.5% will wait and see as they are undecided. 11.6% will upgrade to the iPhone 5s, 1.4% to the iPhone 5c . 0.2% said they would buy both.1
Although it’s only a quick internet survey, it’s interesting to see the relative disinterest for the iPhone 5c. Obviously, respondents might have skewed towards a geek crowd, who know that the 5c is only marginally better than the current 5. But I believe that the 5c is a phone for first-time iPhone buyers , and those who haven’t upgraded to the 5.
The survey points out that the two main reasons behind the unwillingness to upgrade are a perceived absence of true difference with the iPhone 5 and the lock-in into a 2-year contract2