They have also designed a Mega Evolution for Lycanroc that combines its three ... a creepy drawing of Natu in a dark elevator, and images of Chinchou and Lanturn with their lanterns darkened.
Most notably, however, Rockruff can evolve into one of three different versions of Lycanroc - Midday, Dusk and Midnight - depending on whether you've met a certain requirement in the main series.