I've yet to see one, but am tempted to get one in white, just to be different.
I like the Apple white look and suspect it may be more durable and won't show marks and fingerprints as much as the gloss black.
What do you think?
Phil
Aplle genius told me that the white display iphones have a problem with dirt getting in (and showing up) around the sim slot. I was moaning about finger smudges on my black one at the time and saying that maybe I should have got a white one instead.