UPDATE: Hasbro has confirmed the subtitle on its official site.
Transformers 2 producer Don Murphy on his official message board has posted a link to this site where they are claiming that DreamWorks/Paramount released the full title for the sequel yesterday, although we didn’t hear anything from the studio on Wednesday. They say it’s titled “Transformers 2: Revenge of the Fallen.”
TransformersLive.blogspot.com also says that “Degrassi: The Next Generation” star Nina Dobrev has landed a role as a university student.
Source: Nice Guy Joey, Sp@wn, Joe Popcorn, TheMuffin