The Alberta Film Ratings has provided a tiny bit of information about the new Transformers: Dark of the Moon trailer that is scheduled to hit online on April 28th at 7PN EST and in US theatres on April 29th. The board has listed the trailer of having a length of 2 minutes, 24 seconds with a rating of PG so it can appear in front of pretty much any movie coming out. The rating only refers to the trailer and does not refer to the movie itself which is likely to be edited to get a PG-13 rating. (via
Seibertron, thanks to Sahara for alt link)