Update: New details on Pokemon Ultra Sun and Ultra Moon’s new Lycanroc form have been revealed.
According to a post on the official Pokemon website, Dusk Form Lycanroc is similar to the Midday Form in that both stand on four legs and have an obedient demeanor. However, it also has a few things in common with the Midnight Form, including a matching mane on its head, as well as eyes that turn red when attacking.
While Dusk Form Lycanroc generally has a calm demeanor, it thrives in close quarters combat and can use Counter, a move learned by Midnight Form Lycanroc when it evolves from Rockruff. However, like its Midday Form, this new form can also learn Accelerock. Additionally, Dusk Form Lycanroc has the Ability Tough Claws, which boosts the power of direct contact moves.