Nintendo have shared a banner you can claim through Splatnet 3 (in the Nintendo Switch Online mobile app) and use on your splashtag in-game as a celebratory item for Splatoon 3’s launch today! To get it, just head into the Splatoon 3 section of the NSO mobile app, and scan using the “QR Code Reader” option.
It’s unclear when this banner item will go away, so act quickly!
[See also: PSA: Splatoon 3 Is Out Now on Nintendo Switch]
[Source: Splatoon North America]