CG trailers are a mixed bag. Often times, they are excellent eye candy, and can truly make you visualize a world in a way you couldn't have otherwise. Other times, however, they are just flat out done horribly. Fortunately, the latest Transformers: Fall of Cybertron trailer falls under the former, and is in fact so good, that it saddens me that it isn't in-game footage.
Transformers: Fall of Cybertron currently has a Fall 2012 release window.
