Accusing difficulties encountered during manufacturing, Apple delayed the white version of the iPhone 4 multiple times, leading to assumptions that the controversial handset would never see the light of day. However, Apple Retail Store staffers have recently leaked an internal document confirming Apple’s plans to launch the device in Spring 2011, as promised. After the official launch of its latest iPhone, Apple revealed that the white model was more difficult to manufacture than expected. “White models of Apple’s new iPhone 4 have proven more challenging to manufacture than expected, and as a result they will not be available until the second half of July. The availability of the more popular iPhone 4 black models is not affected,” the Mac maker stated on June 23. This happened not once, but three times, as Apple continued to introduce new products, including a preview of Mac OS X Lion, the latest version of its desktop operating system. Following news of the third delay, high profile tech bloggers and pundits weighed in on the matter concluding that Apple wasn’t likely to release the white iPhone at all. Why? Because Apple has historically refreshed the iPhone line once every year, which left just a few months between the White iPhone 4 launch and the the release of a potential iPhone 5. Needless to mention, with rumors of a next-generation iPhone 5 starting to hit the wires every other day, sales of the new white iPhone model would be hindered, to say the least. Whichever the scenario, Apple is eager to make good on its promise of launching the white version of its iPhone 4, according to an internal document leaked by Apple Retail Store employees. The folks at 9to5mac credit a person named James for the find. An image of the respective document is available above (click to enlarge). It appears that the phone will be sold exactly like its black counterpart - with a two year AT&T contract.