Now I realize TRANSFORMERS 2 was a terrible film that most people try to forget but if you can recall the ending of the film (spoiler alert?) Optimus received the wings of Jetfire, who died fighting Scorponok, so that he may fly to the Harvester and defeat The Fallen (that was one of the weirdest sentences I ever typed). So it should be no surprise that Optimus is still sporting said wings in DARK OF THE MOON.
If you needed some more evidence, you need not look further than the new Super Bowl spot, which shows Optimus using his wings. During the big city battle, Optimus swoops in from above, his wings dispatch from his back (very similar to how his trailer would mysteriously disappear in the cartoon) and he starts carving bitches up like Thanksgiving turkeys. Take a look at the still below and you can watch the video below for a good luck at Optimus in flight.