Nintendo just announced a Nintendo Direct airing on May 17th. The Direct will focus mainly on the upcoming action multiplayer game ARMS. Nintendo also promised to release a new trailer for Splatoon 2 on Nintendo Switch.
Nintendo revealed a lot of details about the new battle modes in ARMS which you can catch up on right here. Furthermore a single player mode for Splatoon 2 has been introduced as well. All the information on the new mode can be found here.