Apparently the last lines in the 7th book is so much for the scar so what I think is going to happen is this, something happens to Harry his scar all of a sudden hurts and he ends up in the hospital wing, Dumbledor comes to visit Harry only to find Voldermort climbing though the window casts a spell which sends Dumbledor flying into a wall, Voldermort starts to approach Harry, with every step closer he takes Harry's body shakes more and more violently, as if in shock, just as Voldermort reaches out to grab Harry Harry's scar erupts with a blinding green light killing Voldermort, then as if in reverse the light returns to the scar taking it with it leaving nothing on Harry's head, when Harry's scar had vanished Dumbledor got up and went straight to Harry's bed side as Harry lay there motionless as if dead and he was but then he started breathing allowing Dumbledor to breath freely as well Harry eventually gets better and notices that he no longer had a scar, for people to stare at when ever they met him, thus coming up with the line so much for the scar.