The third installment of the Transformers movie franchise is titled Transformers The Dark Of The Moon and we finally got the official plot synopsis:

Update – here’s the first official trailer of Transformers 3:

Transformers 3 The Dark of the Moon

Plot of Transformers 3 The Dark of The Moon:
“The Autobots Bumblebee, Ratchet, Ironhide and Sideswipe led by Optimus Prime, are back in action, taking on the evil Decepticons, who are determined to avenge their defeat in 2009’s Transformers Revenge of the Fallen. In this new movie, the Autobots and Decepticons become involved in a perilous space race between the U.S. and Russia, and once again human Sam Witwicky has to come to the aid of his robot friends. There’s new characters too, including a new villain in the form of Shockwave, a longtime Transformers character who rules Cybertron while the Autobots and Decepticons battle it out on Earth.”

The film is directed by Michael bay and is starring Shia LaBeouf, Rosie Huntington-Whiteley, Josh Duhamel, Tyrese Gibson, Kevin Dunn, Julie White, Frances McDormand, John Malkovich, Ken Jeong, Patrick Dempsey, Alan Tudyk, and John Turturro. The film will hit theaters on July 1, 2011.
:)