Apparently it’s harder to build white iPhone 4s than black ones. Apple has explained the delay behind the white iPhone 4 model in an official statement:
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.
Initially I thought the black model was better looking, but after seeing how it’s a mad fingerprint magnet and considering the rarity of the white model…I kind of want a white one. And no, I’m not selling out on my race.