So I was looking at the Rey and BB-8 I bought earlier today at Ross and damned if this doesn't look like a legit variant to me.
I have all three previous versions of Rey and BB-8 (original release, retouched version, and the one with the lightsaber) and this one looks distinct from all of them. Not so much Rey, although there are a few subtle differences with her, but definitely BB-8.
This latest one has a much heavier grey wash on his dome, and conversely, none at all on the body. Literally just silver and orange apps on a pure white body. I haven't taken him out of the box yet but it is obvious at even a casual glance. Very interesting.
Maybe these were some leftovers or rejects from a previous factory or something, odd that they would be showing up randomly at ROSS, but a pleasant surprise to me.
I will try to line em all up and take a picture for comparison, if anyone cares.