If you were happy to see Optimus Prime looking more like his G1 counterpart in the upcoming Transformers 4: Age of Extinction, along with the Transformers: Age of Extinction Generations Voyager Class Evasion Mode Optimus Prime Figure, then hang on. It looks like TakaraTomy will be releasing one that looks more like Prime actually does in the movie. All beat-up and rusty, aka, Mr. Old Rust Buckets.
The figure will apparently be a Japan Toys R Us Exclusive. Robot Kingdom has them up for pre-order, priced at $47.90 USD. A little pricey compared to the one you can get now, but if you like the rusty variant, this might be your only option. According to their site, this Optimus Prime should be available in August.