Apple plans to have three million iPhones ready for sale on launch day, June 29th, according to BusinessWeek sources. Most analysts look for Apple to sell around 3 million units in 2007, contradicting this number. PiperJaffray analyst Gene Munster believes the company will sell 3.2 million units in 2007, but also claims the company could sell as many as 45 million iPhones in 2009. “While this may seem like a bold prediction, we believe a number…