Pokemon Ultra Sun and Ultra Moon will feature a new Lycanroc form.
According to a post on the official Pokemon website, Dusk Form Lycanroc will appear in the upcoming pair of 3DS games. In Pokemon Sun, Rockruff evolves into the Midday Form of Lycanroc, while in Pokemon Moon, Rockfull evolves into its Midnight Form.
Check out the image below to see the new Dusk Form, which features an eye and body color than differ from Lycanroc’s Midday and Midnight forms.
Lycanroc Dusk Form, via Pokemon.com