In a Sunday post by Don Murphy himself, at Don Murphy.net, he gives out a little ROTF info regarding the shooting and awesomeness of the film:

Transformers 2: Revenge of the Fallen has finished shooting and is in the capable hands of Michael Bay and Industrial Light and Magic. If you liked the first movie, this is in the same vein, just more exciting, more spectacle and more robots. The first one was a MONSTER worldwide hit. The second will be the same because I think it will entertain even more than the first. You haven't seen much information leak this time, primarily because everyone knows it works already! June 27, 2009, place it in your calendar!

But what's shocking is the answer he gives as to why there has been no trailers, posters, or even any publicity in general for the film:

we're kind of trying to follow the PIRATES OF CARIBBEAN model, that is, no publicity for as long as possible, since the sequel will have enormous attention no matter what we do

Does he mean that the movie is gonna be so good that it can't be viewed until opening day? Who knows.