Regardless of the accuracy of the numbers, as a Verizon customer, I can say that it totally makes sense 4S owners are upgrading more than 4 owners.  I only have 5 months till my two years is up.  Release was February 4, 2011.  That's just Verizon.  AT&T customers would be June 2010, which would mean most of them should be ready.
	
		
			
		
		
	
				
			 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		