As with any news item in this section... SPOILERS.

A 5 minute clip has been posted up, showing a fair bit of the action that we should be seeing in TF3.

They call the new girl by the wrong character name, but aside from that, we get to see a fair bit of stuff happening, and even some Autobots too (yeah, most of the action is the military doing all the work - but there are some nice explosions...).

Still not sure how it makes sense to the writers and director, to have soldiers still shooting normal bullet ammunition, when it was established way back in TF1 that it has no affect on Cybertronians...
Stupid people, not following their own plot device in 2 TFs movies now.