Yes and no. Remember that Dumbledore said that there are worse things than death when he fought Voldemort. Check out thinkpotter.com and look at their theory. I've jumped on the bandwagon with them for now. I feel that Harry and Voldemort will in essence become a singular being, with Harry winning the control of that being because of his heart. Far fetched yes? Well, check out the site.
Of course voldemort will die. If theres some loophole in the prophecy then i think neville will kill him. if not, neville will kill bellatrix, and harry will kill voldemort
I actually think Harry might try to kill Bellatrix because she killed Siruis and he was MAD. Ofcourse I would be too. I cried when that happened, seriously. I don't know how Harry could kill Voldemort. That's a good question. Maybe, he might need some help from friends. I don't know.
Volermort took steps to stop him dying that why the rebounded curse did not kill him completely. However since then he has drunk the blood of the Unicorn which although will keep you an inch from death has a curse in that they will only have a 1/2 life/cursed life (sorry can't remember exact wording).