Well, remember when we all thought the movie was confirmed to be 2 hours and 14 minutes? There is now a possiblity that it could actually be 2 hours and 33 minutes according to bfi.org! This information is from an IMAX website, but I can't imagine there would be 19 extra minutes of footage in an IMAX theater. Plague1980, a member of the Shoot for the Edit forums from Michael Bay Dot Com has said, "Well, I just got off the phone with my local Imax and they say the run time is 153 min." Many other websites say 153 minutes as well and Fandango still lists it as 1 hour and 49 minutes. So what do you think?
Update: This is technically correct. Nelson had this to say via Twitter: "Imax print of #Transformers3 has no extra footage as being reported by some web sites. TF3 is 2hrs & 22mins plus 10min credit crawl." This means Transformers DOTM is 8 minutes longer than the initial run time confirmation!