Short answers, pulled from the story.
Paramount Pictures announced a third Transformers film on the 16th of March 2009. The worldwide release followed one day later on the 29th of June 2011 after early screenings took place on the 28th of June 2011.
Ehren Kruger became the sole screenwriter for Dark of the Moon after Roberto Orci and Alex Kurtzman declined to return. Writer Jenni Konner joined to flesh out female characters and add humor before the script was completed by the 19th of March 2010.
Megan Fox originally attached to the film did not reprise her role because executive producer Steven Spielberg reportedly chose not to renew her contract after she compared Bay to Adolf Hitler. Rosie Huntington-Whiteley replaced Fox as Sam's new girlfriend.
Transformers: Dark of the Moon grossed $1.124 billion worldwide and earned $352.3 million in North America plus $771.4 million elsewhere. It crossed the $1 billion mark on the 3rd of August 2011 making it the second Paramount film to achieve this milestone alongside Titanic.
Industrial Light & Magic served as the main CGI visual effects company while Digital Domain rendered 350 CGI shots including Laserbeak, Brains, Wheelie, and protoforms concealed on the Moon. Legend3D completed 78 minutes of work on non-visual effects and visual effects shots.