[SPOILER]
Yes, he does.
The final death in Harry Potter and the Deathly Hallows is the death, and thus final defeat, of Lord Voldemort.
Severus Snape. In the end (after Voldemort's defeat): Professor McGonagall.
No, Neville Longbottom did not defeat Lord Voldemort in 'The Deathly Hallows'. It was Harry Potter who ultimately defeated Voldemort in the final book of the series.
Yes. she is in the 2nd part of the Deathly Hallows. She's the one who helped Harry defend Hogwarts with using the spell of guards to protect. She also saved time for Harry to defeat the horcruxes of Voldemort.
Yes, Harry Potter and the Deathly Hallows follows Harry, Ron, and Hermione as they search for and destroy Horcruxes to defeat Voldemort. The trio faces many obstacles and challenges as they navigate through the wizarding world to ultimately bring about the downfall of the Dark Lord.
Use magic
The theme is Harry Potter has to defeat Voldemort or die trying.
In the book "Deathly Hallows," Harry Potter uses the Killing Curse to defeat Voldemort. When Voldemort casts the curse, Harry uses a Disarming Charm which causes the curse to rebound and destroy Voldemort instead.
At the end of Harry Potter and the Deathly Hallows on the 2nd May 1998 during the final battle. Lord Voldemort cast the killing curse at Harry using the elder wand, which Harry was technically the master of. The wand cannot be used against it's owner and so, the wand flew out of Voldemort's hand and Harry cast expelliarmus resulting in the spell hitting a now defenceless Voldemort.
Yes, Harry Potter defeats Lord Voldemort in "Harry Potter and the Deathly Hallows" by destroying the Horcruxes, the key to Voldemort's immortality. In the final battle, Harry's sacrifice and Voldemort's own choices lead to his ultimate defeat.
The main conflict is Harry needs to find all the Horcruxes to be able to defeat Voldemort and he solves it by skipping school and going to look for them.
It's about Harry finishing the "mission" that he and Dumbledore started to destroy the Horcruxes so that they may finally defeat Voldemort. As for the release date of the movie, they just now came out with the sixth one in the US so I suspect that it will be another year or two before Deathly Hallows is out.