Since the iPhone debuted in 2007 geeks have been hearing rumors that the device would be coming to other carriers. With the exclusive deal that AT&T has set to expire, many are expecting that the iPhone 4 will hit Verizon or another network in 2011. DigiTimes reports that sources in Taiwan at component firms are saying that Apple has upped the shipment estimates for Q1 2011.

According to the sources, Apple expects to sell in the area of 20 to 21 million iPhones in Q1 2011, which is up from the previous prediction of 19 million units. According the unnamed sources WCDMA iPhones are expected to sell in the area of 14-15 million units.

The same sources also claim Apple expects to ship 5-6 million CDMA iPhones. That would the long awaited iPhone version for Verizon. According to the sources, the Verizon iPhone will hit in Q1 2011. Foxconn and Pegatron are said to be splitting the manufacturing duties for the CDMA iPhone.