Is It? Could It Be? MP-05 Megatron? (Short Answer: No.)
If this image at BigBadToyStore is legitimate, we may have our very first look at the upcoming Masterpiece Megatron figure, albeit in silhouette. Robogeek28 has posted this thread on our forums linking to this preorder page on BBTS's website featuring "MP-05 Masterpiece Megatron with Modified Orange Barrel", and a darkened silhouette of what appears to be the figure itself.
One can imagine more detailed pictures will be showing up very soon, so keep watching!
Edit: Curse you, papa bearrr, for ruining our delusions! The image seen is a blacked-out version of a Mark's Projects Megatron custom, which can be seen by clicking here .