I'll agree with Dr. T, I do believe the prophecy was made before Harry's birth, hence the way it could've been Harry or Neville up until Tommy-boy made his decision.
It sounds like Harry's in for "interesting" times as figures in a 4000-year-old scheme; especially since it seems to involve both Tommy-boy and the last one capable of sensing Death Magic. I will admit, I do wonder if Damion's father's 'special project' is involved in this scheme of the ages.
I do like the way he's cautiously interacting with his friends at Hogwarts (I do want to hear the backstory behind his good working relationships with Neville and Theo, there's got to be a killer backstory there; especially if Ron and Hermione aren't aware of these.
I do have to wonder if Harry's attending SIlvermoor is upsetting some of Dumbles' schemes; that would be poetic justice if getting the education he really needs managed to thwart Dumbles' plans.