Voldemort will die, and Harry will live. No doubt. I mean, lets put this in a the light of reason.
JK wrote some books.
The world loved them.
The world loved Harry.
JK held her readers in huge suspense throughout the series.
Harry died.
The world hated JK for wasting their time on "HP" books.

There's no way JK can kill Harry off after bringing us through seven books of "Harry Potter." At least half her crowd would go mad with rage, me included. It'd be sheer stupidity if she did, if you'll all pardon me.

Oh, and by the way, Neville dosn't count. Dumbledore pointed out that Neville could've been the one mentioned in the prophecy, but since Voldemort chose Harry, that excludes Neville from it. That's not to say he won't die, but he dosn't hold any claim to the prophecy. So he can't kill Voldemort. So, Voldemort will die, becuase Harry won't, and one can't live right while the other is alive, or something like that.