It’s a shot of Optimus Prime with the tag line “Evil Will Burn”.
Bay is back directing. He’s said this will be his last Transformers film, but he said that after every TF movie so, whatever.
Can I make one suggestion Mr. Bay? Watch the last 30 minutes of The Avengers and take lots of notes. It’s every bit as big as the end action sequences in your TF movies. The difference? Joss Whedon made it possible for us to follow the action.
SOURCE: Cine 1