Apple has placed orders for four million units of new iPhone models, with delivery expected by the end of this quarter, according to a China Times report (Translated Link). The report goes on to state that Apple may introduce three distinct iPhone models, including a new 2.75G (EDGE) model, a new 3G model, and a third model created especially for the Chinese market. All three models are said to be similar in design to the current iPhone, and the report states that the introduction of a third, smaller model—often referred to as the iPhone nano—is unlikely. Prior reports have indicated that a future iPhone model would include an improved, 3.2 megapixel camera, 802.11n wireless network support, and video recording features; Apple is expected to reveal at least one new iPhone model at this year’s WWDC event, scheduled for June 8-12 in San Francisco. [via Mac Rumors]