By way of this magazine scan
from Figure King #190, we have our first look at the upcoming Transformers Cloud exclusives. The Optimus Prime as anticipated is very much his traditional colors, although this time with white upper legs rather than silver, and the black windvane has the Autobot logo stamped on it. He appears to have a chromed grill and bumper in truck mode, but it might be the quality of the image.
The Megatron on the other hand is all done in pale grey and at first glance almost looks like an unpainted resin prototype, were it not for the black on the treads and waist armor, and red on the side bumpers. A closeup of his headsculpt is shown, which seems to be the same sculpt as the GDO Megatron, although being done in white means that the angles of the face seem smoother in this photograph, giving the face a rather unsettling quality.
The scan also has a brief new look at the Transformers Go! black version of Thundertron / Leo Prime, who is sporting a very Zoids Blade Liger look in beast mode with the swords pegged into his sides in beast mode.