Version 5.0.0 (Splatoon 2)

Version 5.0.0 is an update for that will be released in late July 2019; it will be the last update for new content.

Private Battle
Private Battle will receive a new mode called "Turf War (Splatfest)", which will function like normal Turf War but will change the stage and ink colors to the look of a Splatfest. Stage selection options will include every regular stage, as well as all 24 Shifty Stations. The ink color used can be chosen from all 51 Splatfest ink color combinations used across all three regions.

Gear
The gear item will be added and given to all players as part of the update. The item will have the ability, matching the original, Splatfest-only.

Stages
Shellendorf Institute will also be worked on for Version 5.0.0, with what seems to be changes to the top glass floor and elevated platforms in between the glass top and the spawn point.