Every Legion wave released so far has a different Bumblebee toy, and this one is the ugliest one (and makes the least sense). It should have been completely black or at least have the back half & legs in black.
Hasbro didn't even bother giving the 2nd & 3rd releases a prefix to distinguish between the three of them... so it is up to collectors to label them differently.

Totally avoid... get the Wave 1 version instead, as it's the new mould as well, but in accurate colours.
(in fact, an upcoming 5-pack has this mould in half black too, but black in different parts - so get that one if you really want a black/yellow Bbee, which will be better value)