Since the Gen1 version has been the inspiration/basis/framework of the IDW & FOC Metroplex artworks, a toy that is also based on the original Gen1 toy/character is possible to be labelled/grouped as either really... depending on your tastes or fiction exposure.
Since the Generations Label is now including IDW models as well as FOC, the wording in the bio might give a clue as to where this one belongs... but IDW and FOC had fairly similar introductions/backgrounds to Metroplex, so maybe Hasbro is keeping it vague to appeal to both IDW and FOC fans/collectors.