Eeltail Alley/Development
From Inkipedia, the Splatoon wiki
Eeltail Alley, the stage in Splatoon 3, features in both the Single Player trailer and the Release date trailer. As with other stages shown before the game's release, the stage's design has changed between the two trailers. Overall, it appears the stage appears narrower in the latter trailer; some of these changes are outlined below but are best observed in the aforementioned videos.