Numerous photos have leaked out of the Detroit set of Transformers 4, but this morning director Michael Bay released the first official image from the Paramount Pictures film, accompanied by the words, "Just another day on the set of Transformers 4."

The photo shows Bay standing in front of a mysterious piece of technology with stars Jack Reynor and Mark Wahlberg, and crew members Casey "Walrus" Howard, John Kairis, Lukasz Bielan and Amir Mokri.The production moves to Chicago today for what's rumored to be a scene involving the Dinobots.The film, which opens June 27, 2014, also stars Nicola Peltz, Stanley Tucci, Kelsey Grammer, Sophia Myles, Li Bingbing, T.J. Miller, Han Geng and Titus Welliver.