Pocket-lint:

Well, according to our jacket wearing gent, Apple is having trouble getting its two suppliers in the Far East to match the white used in the manufacturing of the parts. The white home button colour doesn’t match the white front face plate colour, it turns out.

The folks at Pocket-lint ran into the white iPhone carrying gentleman at a New York City press event and asked him why the device hadn’t been released yet. Seems like a simple enough explanation, I just can’t understand why it is taking so long to get it fix.