Over at the MB.com forums, admin Nelson reminded everyone that while Transformers: Dark of the Moon will be in real 3D, it will not be in real IMAX, "There will be a 3D reel but it's not in IMAX format (70mm). IIRC, they did not use Imax cameras this time around."
Now this doesn't mean the movie will not be released to IMAX theatres, it just means that there are no scenes specifically shot for IMAX's 70mm format (I believe standard movies are 35mm) like was done with Revenge of the Fallen were scenes such as the forest fight and Devastator had been filmed in 70mm for IMAX release. The experience was somewhat duplicated for Wal-Mart's "Big Screen Edition" Blu-ray edition of the film. So news, but not really news as I think Revenge was the last film to do anything IMAX specific as it pre-dated the current 3D craze.