The official Pokémon Facebook page has unveiled Honedge's evolved form, Doublade. Doublade is able to coordinate both of its blades telepathically to attack twice in battle.
Doublade is a Steel/Ghost-type Pokémon and has the Ability No Guard. It can learn Sacred Sword. It has a height of 2'07" and a weight of 9.9 lbs.
Doublade official artwork
Doublade using Sacred Sword