9to5mac claims that Apple will reach approximately 5 million in iPhone sales by Macworld San Francisco in January 2008 which would bring them half way to their goal of 10 million iPhones sold by the end of 2008.
According to 9to5mac's sources, approximately 1 million of these sales are through Europe, despite reports of sluggish sales. The news comes shortly after reports that iPhone's sales have exceeded Windows mobile marketshare by capturing approximately 27% of the smartphone market this past quarter.
These rumored sales numbers are difficult to verify, but would represent a significant acceleration of sales since their one millionth sale, which took place in September. Apple's iPhone sales, however, may have been spurred by the $200 price drop that also took place in September. If these numbers are true, Steve Jobs will likely announce them during the Macworld Expo Keynote on January 15th.