There is very known about the next iPhone other than rumors which point toward a larger display, new design and iOS 6. Now a recruiter from Foxconn - Apple's primary supplier for iOS devices - has revealed in a recording that Apple may release the new iPhone as early as June.The source also revealed that Foxconn was in the process of "looking for 18,000 employees..." to build the next iPhone.
Given that the iPhone 4S has fairly seen four months in the public eye it may be unlikely that Apple will release a new iPhone so soon, but given that Apple did sway their initial release cycle of the iPhone it wouldn't be surprising if they go back to their original release cycle.
It is also important to note that Apple made a huge profit by selling the iPhone 4S during the 2011 holiday season, so it will be surprising if they don't consider that when releasing a newly designed model which is likely to do much better in the current market.
Whether this rumor turns to fact or not is totally up to Apple. So until there are facts to back this claim we will add this one to our rumor mill and continue following the news as it comes our way.
source - Macotakara