G1 Optimus Prime (pictured left) and Soundwave will be among the ten-plus new playable characters included in the pack, joining the previously pictured Sideswipe and G1 Starscream.

We still don't know exactly when the downloadable pack will hit PlayStation 3 or Xbox 360, though it's said to be some time this summer, or how much it will cost. However, we do know that, alongside the new characters, it'll sport three more multiplayer maps, an "expert" difficulty mode, and new achievements and trophies.