This Thundertron strikes me as being like the Buzzworthy Bumblebee releases of Earthrise Cliffjumper and Studio Series 86 Kup, and the Selects 5-pack versions of Sunstreaker, Jazz, Wheeljack, and Trailbreaker. We've been getting more and more of these "take 2" versions of characters that seem to existly mainly to correct something that Hasbro either didn't like or felt was a mistake with the first release. In this case, it's Thundertron but with the correct head.