This clip features some new scenes apart from some recycled scenes from the previous clip. The narration from the beginning by Optimus Prime was new. The cool scene was indeed the revelation of Mirage showing off his blades to some supposedly Middle-East border guards (looks desert like on the background).
Mirage is still a disputed name as many parties in the movie loop itself have been suggesting different names from Rush to Enzo. Whatever his name is, this is one cool bit of the clip.