Release Date: 11-16-12

After the birth of Renesmee Cullen, Bella, now a vampire, finds herself enjoying her new life and abilities. However, the vampire Irina misidentifies Renesmee as an “immortal child”, a child who has been turned into a vampire, and because immortal children are uncontrollable, creating them has been outlawed by the Volturi. After Irina presents her allegation to the Volturi, they plan to destroy Renesmee and the Cullens. In an attempt to survive, the Cullens gather other vampire clans from around the world to stand as witnesses and prove to the Volturi that Renesmee is not an immortal child.

Mackenzie Foy as Renesmee Cullen, Edward and Bella’s daughter who is half-human half-vampire, imprinted on by Jacob Black (werewolf/shape-shifter). She can transmit her thoughts into one’s mind through words and/or pictures.
Dakota Fanning as Jane, a loyal servant to the Volturi
Cameron Bright as Alec, a loyal servant to the Volturi
Charlie Bewley as Demetri, a loyal servant to the Volturi
Daniel Cudmore as Felix, a loyal servant to the Volturi
Noel Fisher as Vladimir, one of the twelve founders of the ancient, but deceased, Romanian coven
Guri Weinberg as Stefan, one of the twelve founders of the Romanian coven
Lee Pace as Garrett, an adventurous nomad
Joe Anderson as Alistair, a solitary nomad
Judi Shekoni as Zafrina, a member of the Amazon coven
Tracey Huggins as Senna, a member of the Amazon coven
J.D. Pardo as Nahuel, a vampire hybrid
Rami Malek as Benjamin, a member of the Egyptian coven

Plot and info from Wikipedia
Official Website