Judging from what RK have posted... it is definitely a new convoy/prime mould. It has a figure- could be spike for the drivers seat- and is resized into a smaller cab/trailer. It is a new mould- whether that be a retooling of the old mpor a completely new design ( I think the latter).

Definitely not Fortress Maximus- although that would be sweet. Consider the cost of MP Rodimus was already about $200...