Transformers: Fall of Cybertron is looking good, and the thing I'm looking forward to the most are the Dinobots. High Moon Studios had to convince Hasbro to let them include the dinosaur crew, and once they did, they went about creating a whole new origin story for them.
Shockwave, the Decepticon's mad scientist of sorts, transformed Grimlock and crew into their new dinosaur forms. He did this in order to control them for his own purposes, but the plan backfired. Now the Dinobots are out for Shockwave's shiny metal ass.