Apple could sell as many as 9.5 million iPhones in the June quarter, claims Piper Jaffray analyst Gene Munster. The new estimate is a major increase over an earlier one, raised by a million units. Part of the reasoning for the change stems from iPhone 4 upgrades; Munster argues that of the 8.4 million iPhones activated at AT&T between September 2008 and June 2009, all of them should now be eligible for the carrier's early upgrade program.
