Splatoon 2 has LAN Play and Private Battle Spectator View features

Splatoon 2 will have a “LAN Play” and “Private Battle Spectator View” features, Nintendo confirmed during a Tokaigi 2017 stage event.

The LAN Play feature will allow up to 10 docked systems – eight players and two spectators (more information below) – to connect via wired LAN, and create local Private Battle tournaments without the need for an internet connection.

Private Battles are closed rooms where you can have four-on-four matches against friends. Private Battle Spectator View is a new feature that allows an additional two players to participate as spectators, who can switch between an overhead view of the map and third-person views of each character. The official Splatoon Twitter account suggests using this feature for distributing videos online from the viewpoint of the commentator.

『スプラトゥーン2』には、「プライベートマッチ観戦機能」が搭載される。
これは、プライベートマッチで対戦する8人とは別に、9人め、10人めがカメラマンとしてマッチングして、バトルを観戦できる機能だ。
ふかん視点と、各プレイヤーの三人称視点を切り替えることができるぞ。 pic.twitter.com/DBvjLm6BAh

— Splatoon（スプラトゥーン） (@SplatoonJP) February 11, 2017

Thanks, @NintendoAmerica (2), SplatoonJP (2) and Games Talk.

Update 2/12/17 at 3:30 a.m.: LAN play supports ten docked systems, not eight.