Images of the AD-01 Leader Class Optimus (the one that was first seen at the NYCC in October) were also included in the recent JP Hobby magazine scans that all the Masterpiece info has been coming from this week.

This figure is in the First wave of Leaders by Hasbro, but might not look as fancy with shiny parts, as this JP version is being listed as "Premium".

We get a good look at the back of the toy in Robot mode, and it looks worse than the First Edition figure.
Between these two moulds, and the Voyager Optimus being the square-cab truck, it isn't looking good for a decent Optimus nose-cab figure for us.