The rumors on the Apple vine circulating around the Internet this week come out of Taiwan, where sources in the parts supply chain reportedly say Apple is in development of a combined UMTS/CDMA iPhone which would be due for release in Q3 of 2010. The combination of these two technologies in a single handset would allow Apple to sell only a single model to virtually all carriers around the world, without having to worry about different models in different countries or with different carriers. Most specifically, Apple would be able to sell the iPhone to Verizon customers in the US and end the longer-than-expected exclusivity with AT&T. This may be great news for Verizon and other CDMA carriers around the world, but AT&T likely isn’t thrilled. That said, customers everywhere will likely benefit, as AT&T continues (and hopefully works even harder) to update and improve their 3G coverage and competition with other networks will inevitably lower plan costs across the board.