Cyril, a member of our macbidouille forums had, as other people in the world, a big disappointment when he unpacked his 27" iMac core i7 that he had waited for so long.
He also found the left bottom corner of the glass of the screen broken. Experts will certainly know better than us the cause of it. Let us wish that Apple fixes this rare but distressing problem quickly for those which await their machine.
In any case, one should see the Refurb filled with iMac Core i7 at the beginning of next year…