Equinoxe
has a BONE to pick with you
This Steel/Ghost sword pokemon was apparently revealed at Japan Expo in France; it's called Hitotsuki in Japanese and Monorpale in French.
No idea about the English name, they'll probably update the official pokemon site soon or something. It' sheathed in the upper left picture and unsheathed in the others.
This thing looks pretty neat to me! I like the design on the sheath (and the blue ribbon-y thing is kinda like an arm that it uses to unsheath itself!). :D