From TFW2005.com are pictures of four new toys for the Transformers: Revenge of the Fallen Legends class toys. Two of them are the familiar Optimus Prime and Bumblebee. One of the other two is Jetfire that clearly shows the SR-71 Blackbird nose and indicates he is a Decepticon. I think the character only starts the movie as a Decepticon but ends it as an Autobot.
The final toy reveals a possible new character for the movie - Springer. While the toys says "Autobot Springer", that is probably for copyright reasons. Springer is a G1 Transformer first introduced as a triple-changer in the animated Transformers: The Movie and has a relationships of sorts with Arcee. Based on the toy picture I am guessing his alt mode is a V-22 Osprey. The military aircraft was used in the first movie and rumored to have been used in scenes for the second. Now considering Hasbro likes to use characters in their movie toy lines that have no part in the movie, its possible this character doesn't show up in the movie. Considering the alt mode and the characters history I have my doubts on that theory.
Update: From TF08, below is a picture of Legends Jetfire showing his jet mode. Thanks to minime for the link.