New user icons and pre-purchase options for select Switch titles are also among the system's latest features.
Arms joins the roster of other Nintendo IP to be given the Dark Horse treatment.
After a brief stint in the game's Global Test Punch, Lola Pop is now available for all Arms players.
Arms' latest fighter is a spunky, balloon-pants wearing brawler.
Additional information on both ARMS and Splatoon 2 will be coming out of the Direct.