Pokemon Go will be celebrating its sixth anniversary tomorrow and the official anniversary artwork has been released to commemorate the event, seemingly leaking new characters and Pokémon that aren’t yet in the game. The artwork was drawn by the game’s character designer Yusuke Kozaki, lending more weight to the theories that these may be coming to the game soon.Pokemon Go sixth anniversary artwork charactersWhen scouring the sixth-anniversary artwork above, as posted by Pokemon Go trainer LeekDuck, players have managed to find several new characters and Pokémon who are yet to appear in the game.