Not confirmed, but highly likely, it was not under the accessory preview, and has only been seen with the full dress (silver/grey, gold/red, gold/brown, I have seen). The dress is ok and all (I would have liked more armor variant dresses and outfits), but the claws (IMO is what makes this look fierce) as a separate accessory would have been way better.
I am not sure they put everything in the preview and it make sense to show them together as it makes little sense to put those claws on a frilly looking outfit. But yes I can see how it could well be part of the outfit. It's going to look silly when they eat with the claws on and the dress would have been nice otherwise. Hopefully they add the claws as an accessory, either as ring or gloves.
