Rumors and leaks

There are a few rumors and leaks regarding Splatoon content. Some are created by the community with others being sparked by the developers themselves.

Ongoing
This is a list of rumors and leaks that have neither been confirmed true nor false.

OatmealDome Leak on Reddit
In August 2017, reddit user OatmealDome made two posts with datamined information from which had not been officially revealed at the time. Many upcoming Splatoon 2 weapons and gear have been found in the game's files.

2018-03-15 Update
On 2018-03-15, LeanYoshi, who performed the data mining for weapon stats, has updated the weapon loadouts for all previously leaked weapons :

2018-04-24 Update
On 2018-04-24, LeanYoshi updated the data with a few more changes, as well as updating the database with the Version 3.0.0 changes:

2018-07-12 Update
On 2018-07-12, LeanYoshi updated the data for the from the Version  update which changed its special from  to.

"Mirror" and Ancho-V Games datamine
On 2018-06-30, OatmealDome posted on his blog about two upcoming datamined stages, a new one codenamed "Mirror" and Ancho-V Games.


 * "Mirror" would be similar to Saltspray Rig with mirror symmetry (with the Splat Zone, Tower, and Rainmaker appearing on the line of symmetry), but is not actually Saltspray Rig as its codename in Splatoon is "SeaPlant". The map appears to be based on a theater due to the test object names.
 * For Ancho-V Games, the beginning areas of the map have been redesigned with the Spawn Point is placed further back, and a Sponge was added.

WemI0 3.0.0 datamine
On 2018-04-26, Twitter user WemI0 preformed a datamine of Version 3.0.0 in Splatoon 2 and found several models for gear, weapons, and more:

{{Collapse| Gear Most gear does not have an icon in game but still has a model for them.

{{Collapse| Salmon Run Gear These gear pieces will be part of the monthly Salmon Run gear rewards.


 * The Octoling set: {{Gear|S|Headgear|Octoling Goggles}}, {{Gear|S|Clothing|Octoling Armor}}, {{Gear|S|Shoes|Octoling Boots}}.
 * New Salmon Run headgear labeled "Hed_COP103", which has the appearance of a beekeeping mask.
 * Two new Salmon Run clothing labeled ""Clt_COP107" and "Clt_COP108". "Clt_COP107" appears to be a store clerk's apron with a name tag, while "Clt_COP108" has the appearance of a gym tracksuit with a card on a necklace and a name pin.

}}

{{Collapse| Map A new stage internally named "Nakasu". }}

Weapon details
Further datamining by twitter users WemI0, LeanYoshi, OatmealDome, Simonx22, and 0xRed revealed a total of two new sloshers and two new splatlings.

3.1.0 Update
On June 13, WemI0 datamined Version 3.1.0 and found new details about gear, weapons, and maps.


 * Two new Salmon Run Rewards.
 * The cap used while playing Salmon Run.
 * A white Do-Rag that became the Worker's Head Towel.
 * Four new weapons.
 * The, (originally codenamed "Washtub") and its  alt.
 * The, (originally codenamed "Downpour") and its  alt.
 * The new map: New Albacore Hotel (originally codenamed "Nakasu").
 * An entirely new sub weapon, the (originally codenamed "Wsb_Piyo").
 * When thrown, it leaves a trail before quickly exploding once it hits the ground. It can be charged to add bombs which come after the initial explosion.
 * A new special weapon, the (originally codenamed "SuperBall").
 * When used, a ball held by the player appears and it gets bigger and bigger. When thrown, it explodes like an Inkstrike, damaging or splatting all the enemies in the explosion. Further information from Squid Research Lab revealed its ability to accelerate the charging sequence by using the "Booyah!" signal, which will also refill teammates' special meters when they "Booyah!".

Eight-Ball datamine
On 2018-06-09, Twitter user Simonx22 datamined a new Ranked game mode codenamed "Eight-Ball" and posted a video showing it off.

Rules:
 * Each team must move the Eight-Ball toward the opposing team's Eight-Ball platform to win.
 * The Eight-Ball can be moved by the player's ink, similar to the Eight-Balls now in Octo Expansion.
 * Points are gained by moving the ball towards the opponents' goal.
 * A knockout occurs when the team gets the Eight-Ball onto the opposing team's platform.

Confirmed
This is a list of rumors or leaks that have been confirmed to be true.

Prima Strategy Guide "Coming Soon" section


The Prima Strategy Guide for Splatoon included a "Coming Soon" section which showed off upcoming weapons and stages.


 * Weapons: Carbon Roller, Custom E-liter 3K, E-liter 3K Scope, Inkbrush, L-3 Nozzlenose, N-ZAP '85, N-ZAP '89, Rapid Blaster Deco and Splash-o-matic.
 * Stages: Bluefin Depot, Kelp Dome, Camp Triggerfish, and Port Mackerel.

There are also two images of Tower Control.

Datamine DLC leak
NWPlayer123 datamined Splatoon and leaked information about upcoming weapons, stages, and modes. Also, some pictures and explanations were shown about the new Ranked modes, Tower Control and Rainmaker.

The leaker also uploaded a video of the Sploosh-o-matic, one of the leaked unreleased weapons, after using live memory edits to add it in.

The following content was revealed due to this datamine:

Weapons

 * Sploosh-o-matic
 * Neo Splash-o-matic
 * N-ZAP '89
 * Custom Dual Squelcher
 * Luna Blaster
 * Carbon Roller
 * Octobrush
 * E-liter 3K Scope

Stages

 * Moray Towers
 * Camp Triggerfish

Modes

 * Rainmaker's description and gameplay mechanics.

Version 2.0.0 Datamining
After the release of Version 2.0.0 of Splatoon, NWPlayer123 and Guy Perfect once again dug into the data and found more information regarding unreleased content, including weapons, stages, gear, character models and game modes.

Sloshing Machine Datamining
In a similar vein to the Version 2.0.0 datamining, NWPlayer123 posted photos and video of a new slosher variety, the Sloshing Machine, as well as other minor additions in Version 2.2.0.

Squid Sisters amiibo


A Twitter post by NWPlayer123 on 2016-01-30 showed the results of continued datamining as new amiibo coming for Splatoon, called "AmiiboIdolA" and "AmiiboIdolB" in the game's files. It was believed they could be Squid Sisters amiibo, hence the names.

On 2016-04-30, SplatoonJP finally announced that Squid Sisters' amiibo will be released on 2016-07-07.

Busted
This is a list of rumors and leaks that have been confirmed false.

Cheat code


Some days after the game's launch, players noticed that some Sunken Scrolls, as well as signs on Inkopolis Plaza, contain what appears to be arrows pointing up, down, left or right.

On the 2015-06-09, the official Splatoon Facebook page made a joke post referencing how some Facebook users accidentally type Google search queries on their Facebook profiles. This joke, however, sparked curiosity among fans, as the "search" was for "Squid Jump cheats". Naturally, Nintendo staff themselves would not be searching for cheat codes on a game made by their company, meaning the post was placed there on purpose, likely to hint players about the existence of a code hidden inside the game.

On top of this, the official Splatoon Tumblr account made a post about how players can press on the Plaza to look around, and how this serves the additional purpose of getting information on Miiverse posts. It also mentioned that it "may also have another use", which remains unknown to this day.

As of yet, no code has been found, and it is unknown if there is any relation between the arrows, the rumored code, and the rumored extra function of, or if any secret exists to begin with. Players have since been attempting to figure something out by input the arrow's directions during different parts of the game, mostly the Squid Jump minigame, but without luck.

However, Splatoon Ikasu Artbook definitely shows that it simply is a stylized spelling of "ブイヤベース" (Booyah Base) in Inkling.

Super Mario Sunshine DLC


There was a "leak" on the internet that Super Mario Sunshine amiibo DLC was coming to Splatoon. Only a single image existed regarding this supposed leak. It has since been proven fake, with the author of the leak releasing the images they used to create it.

New Super Mario Sunshine DLC
During July, a new Super Mario Sunshine amiibo DLC rumor with several images was found. These images supposedly depicted new Sunshine-related gear and Octo Valley missions. The supposed announcement date passed, and nothing like it was added, confirming it as false.