Fellow Seibertronian Sabrblade points this out:
Sabrblade wrote:This pic confirms that the mold uses the United Rodimus Prime version of the engine that was remolded to had a new 5mm peg on the engine block to accommodate the Firebolt Arms Micron that used the PCC Pinpoint Mini-Con mold (picutred below).


Also, we have our first preorder for this set and the price is a bit higher than aticipated. Robot Kingdom has it up for US$84.90, and they usually sell for the cheapest price to make up for the higher shipping. The pre-order states that the release is aticipated o be March 2016.