Doubtful. More likely pent-up demand for the next-gen iPhone.
Apple had in previous years been like clockwork - every summer, new iPhone. Then 2011, and no successor in July... so many people waited (I did). Also this is the first iPhone launch without AT&T exclusivity (both VZ and Sprint are alternatives to the big bad T)
I had an iPhone 3G for three years before I ended up switching to AT&T from T-Mobile and bought an iPhone 4S and too date it is still my most favourite purchase.
Apple had in previous years been like clockwork - every summer, new iPhone. Then 2011, and no successor in July... so many people waited (I did). Also this is the first iPhone launch without AT&T exclusivity (both VZ and Sprint are alternatives to the big bad T)