Transformers 4 promo art reveals Optimus Prime riding Grimlock

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JoBlo.com has revealed the above image that supposedly comes from an unknown marketing trade show featuring a first look at Optimus Prime riding Grimlock.

While we knew Transformers: Age of Extinction would feature the DinoBots, up until now nobody had a real idea what they looked like. Now we may have it.

Transformers: Age of Extinction is set to release on June 27th 2014.