The white part is where the new nail is grown. So, clearly this thumb is from a person who does not grow, or age.
So, clearly the thumb belongs to an undead. Probably a vampire.
What we're seeing here is confirmation that Apple is in league with the vampires. Notice how the new iPod nano is black? And Steve always wears black? And Steve miraculously recovered from an uncurable cancer by drinking carrot juice?
The association has been there for a long time - just look at the symbolic bite out of the Apple. The old one used to have a red streak across it. Now the new one glows like the moon, the symbol of the night, the time of the vampires.
But now some guy in the marketing department has figured this out and he's being held captive. This is his cry for help. We're meeting just off the Interstate tonight at midnight in Cupertino with pitchforks and torches for a rescue.
It would make more sense to use stakes and holy water and go in during the daylight hours, but that's just not how its' done.