The Transformers: Masterpiece - Transformers Wiki MPM-1 was HFTD Leader Starscream in Movie 1 colors, while MPM-2 was a premium-painted Battle Ops Bumblebee. MPM-3 is the first one to be a new mold, it looks like.
No one knows just yet if this is going to be a new series, or if this is a one off just yet. And not only is this a new mold, but it seems to be about the size of the current line as well..
Same line, just new direction. Like how the regular Masterpiece line changed after MP-10. That's my assumption, at least. We'll have to wait and see!