I would be surprised if Picasso was the first to do this. If you play around with permutations of faces, it's probably in the first 1000 things you'd come up with, if not the first 100. So while the answer could be yes, Occam's Razor implies it's no.
It's funny that it was Picasso who said "Bad artists copy. Great artists steal" (<a href="http://www.quotedb.com/quotes/3500" rel="nofollow">http://www.quotedb.com/quotes/3500</a>), a quote that Steve Jobs likes.
Where is this a stolen piece. If they did the whole picture it would stolen, if they took a certain part of the picture it would be stolen, but the didn't.
The picture of Picasso is just awesome, the Finder icon is ok, could be drawn by a kid.
"Picasso had a saying, he said, 'Good artists copy; great artists steal', you know, and we have always been shameless about stealing great ideas." --Steve Jobs<p>So that's about all there is to say about that.
Someone just got a subscription to Duh! magazine. Congrats.<p>P.S. There's nothing wrong with being inspired by good art, even to the point of highly derivative imitation. Aping what others have done well is how things advance.