Looks like there's more updates on the Official Transformers Movie
website than originally thought. Music group, Linkin Park has posted an art contest in correlation with the bands track for the third installment of the movie franchise, "Iridescent".
According to the update, a Deviant Art page is required to enter the contest. Login to your account, download the Official Linkin Park and Transformers images, upload your artwork and your entered. You can get the full details on the contest by clicking here