i have a simple theory.if the last word is scar then harry isn't going to die.cos: why would someone talk about someone's scar if they're dead???

but ideas for last sentence:

1.the last chapter is gonna be a kinda epilogue.
2.if you put the word in context with the last chapter then this is what i think the last chapter could be if the one mentioned earlier isn't right: (something along this line) "...the battle was over, and it had all begun with his scar."

i think something like this would be a more viable ending.plus, i would be disappointed if the last sentence was something laclustre.Mrs Rowling has shown she has a brilliant mind and it would just be pathetic to finish things off in a mediocre kinda way.