MacRumors posted a news story that the white iPhone 4 is slightly thicker than the black iPhone 4.
Earlier today, a MacRumors reader notified us that the white iPhone 4 is ever so slightly thicker than the black iPhone 4. It's a small difference, but enough that the white iPhone 4 wouldn't fit in his Incase slider case:White iPhone 4 Slightly Thicker Than Black iPhone 4
Just picked up the white iPhone 4 and realized it doesn't fit into my Incase slider case. It appears that Apple has increased the size of the plastic that borders the glass on both sides by about 1mm.