Yes, but Aro is not. He sends Jane to lead them. They are in a very small portion of the book.
I think that the name of the new born killed by the Volturi in Eclipse was Bree . :)
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Alec, along with the rest of the Volturi, are indeed in New Moon, Eclipse, and Breaking Dawn.
she gets killed by the volturi
There will be a new vampire in the movie that was not in the book her name is Michelle Freeman Cullen Volturi. She used to be part of the Cullen's but left and joined the Volturi, he vampire gift(s) are mental/physical shield and the ability to copy gifts. Her dad is Aro also her mate is Alec Volturi
vladmir is not part of the volturi, he is a vampire whose city was destroyed by the volturi centurys ago in the book
He mentioned the Volturi in the novel New Moon.
Bree broke the rules and carlisle offered for her to become a Cullen but the volturi did not allow it so Jane told Felix to kill her
The theme of the the movie/book in the Twilight Saga: Eclipse is mostly that Bella is trying to choose between Jacob and Edward. Also, the Volturi find out that Bella has not been transformed into a vampire yet. They have to deal with that and along the way, they find out a lot about Jasper's past (this continues in the next book).
Very close to the end of Eclipse after the battle with Victoria and the new borns.
I'm not sure, but I don't think so. I've read eclipse and its the about the battle between Edward and Jacob and the battle between the Cullens/Wolves and the Newborns.... I have read eclipse and if the film sticks to the book then aro will not appear although in the book the volturi appear briefly although it is not aro, caius and Marcus just some of the guard(Jane, Felix and demetri ect).