Prior to Splatoon 2’s official reveal, clips of the game were featured in the announcement trailer for the Nintendo Switch, the game’s native console. its unanticipated appearance led to speculation by the media and public over whether or not the footage shown was that from a port of Splatoon or a sequel. It was also presented in the trailer in a way that promoted the game as an eSport, following investments by Nintendo in Splatoon eSport tournaments in late 2016.
Splatoon 2 was officially unveiled to the public during the Nintendo Switch reveal presentation held in Tokyo on 13 January 2017, where it was announced for release in Q2/Q3 2017. The reveal was accompanied by a trailer featuring the game’s new maps and weapons, and an on-stage appearance of producer Hisashi Nogami, in-character as a scientist from the fictional scientific group in the game, which appeared in various promotional material for the original Splatoon.