I am currently unaware if this has already been posted.... although I honestly cannot remember seeing any recent news mentioning it, but the Transformers Movie website has been updated with a "Teaser Trailer" featuring some more unseen footage.
http://www.transformersmovie.com/
I stumbled upon this only moments ago because I was informed by a good friend that the previews before The Fast and The Furious New Model featured a Transformers Revenge of the Fallen trailer.
Transformers Revenge of the Fallen Teaser Trailer
