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/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 Splatoon 2, which has not been officially revealed at the time. Many upcoming Splatoon 2 weapons and gear have been found in the game's files.

{{Collapse| Already disproved / changed So far, there are a few instances of the final in-game information being different from the datamined values, usually special gauge size. This is due to Nintendo continuing to make changes to weapon sets before unlocking them.
 * The {{Weapon|S2|Main|Gold Dynamo Roller|16}} had its sub weapon changed from {{Weapon|S2|Sub|Toxic Mist|16}} to {{Weapon|S2|Sub|Splat Bomb|16}}, and had its special gauge size increased from 180p to 200p.
 * The {{Weapon|S2|Main|Hydra Splatling|16}} had its special weapon changed from {{Weapon|S2|Special|Ink Armor|16}} to {{Weapon|S2|Special|Splashdown|16}}, and had its special gauge size decreased from 190p to 180p.
 * The {{Weapon|S2|Main|Inkbrush Nouveau}} had its special gauge size decreased from 180p to 160p.
 * The {{Weapon|S2|Main|N-ZAP '89}} had its special gauge size increased from 180p to 190p.
 * The {{Weapon|S2|Main|Octobrush Nouveau}} had its special gauge size decreased from 180p to 170p.
 * The {{Weapon|S2|Main|Dapple Dualies Nouveau}} had their special gauge size decreased from 180p to 170p.
 * The {{Weapon|S2|Main|.52 Gal Deco}} had its special gauge size increased from 180p to 190p.
 * The {{Weapon|S2|Main|.96 Gal Deco}} had its special gauge size increased from 180p to 190p.
 * The {{Weapon|S2|Main|Custom Goo Tuber}} had its special gauge size decreased from 180p to 170p.
 * The {{Weapon|S2|Main|Dark Tetra Dualies}} had their special gauge size decreased from 180p to 170p.
 * The {{Weapon|S2|Main|H-3 Nozzlenose D|16}} had its sub weapon changed from {{Weapon|S2|Sub|Sprinkler}} to {{Weapon|S2|Sub|Suction Bomb}}{{Explain|The information from the March 15th update was correct|*}}.
 * The {{Weapon|S2|Main|Zink Mini Splatling|16}} had its special gauge size increased from 180p to 200p{{Explain|The information from the March 15th update was correct|*}}.
 * The {{Weapon|S2|Main|Sorella Brella|16}} had its sub weapon changed from {{Weapon|S2|Sub|Toxic Mist}} to {{Weapon|S2|Sub|Autobomb}}{{Explain|The information from the March 15th update was correct|*}}.
 * The {{Weapon|S2|Main|Clash Blaster Neo}} had its sub weapon changed from {{Weapon|S2|Sub|Sprinkler}} to {{Weapon|S2|Sub|Burst Bomb}} for the 3.0 preview video, then to {{Weapon|S2|Sub|Curling Bomb}} for the release{{Explain|The information from the March 15th update was correct|*}}.
 * The {{Weapon|S2|Main|Tri-Slosher Nouveau}} had its special changed from {{Weapon|S2|Special|Autobomb Launcher|16}} to {{Weapon|S2|Special|Ink Storm}}{{Explain|The information from the March 15th update was correct|*}}.
 * The {{Weapon|S2|Main|Custom Range Blaster}} had its sub weapon changed from {{Weapon|S2|Sub|Burst Bomb}} to {{Weapon|S2|Sub|Curling Bomb}} and its special weapon changed from {{Weapon|S2|Special|Sting Ray}} to {{Weapon|S2|Special|Bubble Blower}}{{Explain|The information from the March 15th update was correct|*}}
 * The {{Weapon|S2|Main|Custom Dualie Squelchers}} had their special weapon changed from {{Weapon|S2|Special|Ink Armor}} to {{Weapon|S2|Special|Sting Ray}} for the 3.0 preview video, then to {{Weapon|S2|Special|Ink Storm}} for the release and its special gauge size increased from 180p to 190p{{Explain|The information from the April 24th update was correct|*}}.
 * The {{Weapon|S2|Main|Rapid Blaster Pro Deco}} had its sub weapon changed from {{Weapon|S2|Sub|Curling Bomb}} to {{Weapon|S2|Sub|Splash Wall}}{{Explain|The information from the March 15th update was correct|*}}.
 * The {{Weapon|S2|Main|Carbon Roller Deco}} had its sub weapon changed from {{Weapon|S2|Sub|Sprinkler}} to {{Weapon|S2|Sub|Burst Bomb}} and its special weapon from {{Weapon|S2|Special|Inkjet}} to {{Weapon|S2|Special|Autobomb Launcher|16}} and its special gauge size increased from 170p to 190p{{Explain|The information from the April 24th update was correct|*}}.
 * The {{Weapon|S2|Main|Tenta Sorella Brella}} had its special weapon changed from {{Weapon|S2|Special|Ink Armor}} to {{Weapon|S2|Special|Curling-Bomb Launcher}}{{Explain|The information from the April 24th update was correct|*}}.
 * The {{Weapon|S2|Main|Custom Hydra Splatling}} had its special weapon changed from {{Weapon|S2|Special|Splashdown}} to {{Weapon|S2|Special|Ink Armor}}{{Explain|The information from the March 15th update was correct|*}}.
 * The {{Weapon|S2|Main|Light Tetra Dualies}} had its special weapon changed from {{Weapon|S2|Special|Splat-Bomb Launcher}} to {{Weapon|S2|Special|Autobomb Launcher}}{{Explain|The information from the July 12th update was correct|*}}.
 * The {{Weapon|S2|Main|Custom Explosher}} had its sub weapon changed from {{Weapon|S2|Sub|Autobomb}} to {{Weapon|S2|Sub|Point Sensor}}.*
 * The {{Weapon|S2|Main|Ballpoint Splatling Nouveau}} had its special weapon changed from {{Weapon|S2|Special|Splashdown}} to {{Weapon|S2|Special|Ink Storm}}.*
 * The {{Weapon|S2|Main|Bloblobber Deco}} had its sub weapon changed from {{Weapon|S2|Sub|Fizzy Bomb}} to {{Weapon|S2|Sub|Sprinkler}}.*
 * The {{Weapon|S2|Main|Nautilus 79}} had its special weapon changed from {{Weapon|S2|Special|Ink Armor}} to {{Weapon|S2|Special|Inkjet}} and its sub weapon changed from {{Weapon|S2|Sub|Splat Bomb}} to {{Weapon|S2|Sub|Suction Bomb}}.*

{{Collapse| Already confirmed {{Collapse| Confirmed returning weapons / variants }} {{Collapse| Confirmed new weapons / variants }} {{Collapse| Confirmed returning gear
 * Playable girl and boy Octolings, including different player model types for Octoling girls and boys - see the reddit post for links to renders of the hairstyles (will be available as part of Octo Expansion).
 * New ranked mode, in the game files{{Explain|The description given is vague, but knowing the details of the mode they make sense, e.g. the new actor / weapon type is the clams and power clams, being throwable and following the player around|*}}.
 * New Salmon Run stage internally named "Shakehouse"{{Explain|Shake is Japanese for Salmon|*}}.
 * New stage internally named "Pillar".
 * Returning stage Kelp Dome.
 * New stage internally named "Kawa"{{Explain|Japanese word for 'river'|*}}.
 * Returning stage Blackbelly Skatepark.
 * New Salmon Run stage internally named "Threepoints".
 * New stage internally named "Line".
 * New stage internally named "Tunnel"
 * New stage internally named "Tunnel"
 * {{Weapon|S2|Main|Inkbrush Nouveau|16}}{{Explain|was changed before official release, see above|*}}
 * {{Weapon|S2|Main|Slosher Deco|16}}
 * {{Weapon|S2|Main|N-ZAP '89|16}}{{Explain|was changed before official release, see above|*}}
 * {{Weapon|S2|Main|Gold Dynamo Roller|16}}{{Explain|was changed before official release, see above|*}}
 * {{Weapon|S2|Main|Hydra Splatling|16}}{{Explain|was changed before official release, see above|*}}
 * {{Weapon|S2|Main|Custom Jet Squelcher|16}}
 * {{Weapon|S2|Main|Octobrush Nouveau|16}}{{Explain|was changed before official release, see above|*}}
 * {{Weapon|S2|Main|L-3 Nozzlenose D|16}}
 * {{Weapon|S2|Main|.52 Gal Deco|16}}{{Explain|was changed before official release, see above|*}}
 * {{Weapon|S2|Main|Rapid Blaster Deco|16}}
 * {{Weapon|S2|Main|.96 Gal Deco|16}}{{Explain|was changed before official release, see above|*}}
 * {{Weapon|S2|Main|Sloshing Machine Neo|16}}
 * {{Weapon|S2|Main|Luna Blaster Neo|16}}
 * {{Weapon|S2|Main|Neo Sploosh-o-matic|16}}
 * {{Weapon|S2|Main|H-3 Nozzlenose D|16}}{{Explain|was changed before official release, see above|*}}
 * {{Weapon|S2|Main|Zink Mini Splatling|16}}{{Explain|was changed before official release, see above|*}}
 * {{Weapon|S2|Main|Tri-Slosher Nouveau|16}}{{Explain|was changed before official release, see above|*}}
 * {{Weapon|S2|Main|Custom Range Blaster|16}}{{Explain|was changed before official release, see above|*}}
 * {{Weapon|S2|Main|Neo Splash-o-matic|16}}
 * {{Weapon|S2|Main|New Squiffer|16}}
 * {{Weapon|S2|Main|Rapid Blaster Pro Deco|16}}{{Explain|was changed before official release, see above|*}}
 * {{Weapon|S2|Main|Carbon Roller Deco|16}}{{Explain|was changed before official release, see above|*}}
 * {{Weapon|S2|Main|Bamboozler 14 Mk II|16}}
 * {{Weapon|S2|Main|Custom Hydra Splatling|16}}{{Explain|was changed before official release, see above|*}}
 * {{Weapon|S2|Main|Custom Hydra Splatling|16}}{{Explain|was changed before official release, see above|*}}
 * {{Weapon|S2|Main|Glooga Dualies|16}}
 * {{Weapon|S2|Main|Squeezer|16}}
 * {{Weapon|S2|Main|Foil Flingza Roller|16}}
 * {{Weapon|S2|Main|Dapple Dualies Nouveau|16}}{{Explain|was changed before official release, see above|*}}
 * {{Weapon|S2|Main|Custom Goo Tuber|16}}{{Explain|was changed before official release, see above|*}}
 * {{Weapon|S2|Main|Dark Tetra Dualies|16}}{{Explain|was changed before official release, see above|*}}
 * {{Weapon|S2|Main|Sorella Brella|16}}{{Explain|was changed before official release, see above|*}}
 * {{Weapon|S2|Main|Clash Blaster Neo|16}}{{Explain|was changed before the preview and again before release, see above|*}}
 * {{Weapon|S2|Main|Foil Squeezer|16}}
 * {{Weapon|S2|Main|Glooga Dualies Deco|16}}
 * {{Weapon|S2|Main|Custom Dualie Squelchers|16}}{{Explain|was changed before the preview and again bofore release, see above|*}}
 * {{Weapon|S2|Main|Undercover Sorella Brella}}
 * {{Weapon|S2|Main|Tenta Sorella Brella}}{{Explain|was changed before official release, see above|*}}
 * {{Weapon|S2|Main|Light Tetra Dualies}}{{Explain|was changed before official release, see above|*}}
 * {{Weapon|S2|Main|Grizzco Blaster|16}}
 * {{Weapon|S2|Main|Grizzco Brella|16}}
 * {{Weapon|S2|Main|Grizzco Charger|16}}
 * {{Weapon|S2|Main|Grizzco Charger|16}}
 * {{Gear|S2|Headgear|Streetstyle Cap|16}}
 * {{Gear|S2|Headgear|Two-Stripe Mesh|16}}
 * {{Gear|S2|Headgear|Short Beanie|16}}
 * {{Gear|S2|Headgear|Sporty Bobble Hat|16}}
 * {{Gear|S2|Headgear|Jungle Hat|16}}
 * {{Gear|S2|Headgear|Classic Straw Boater|16}}
 * {{Gear|S2|Headgear|Treasure Hunter|16}}
 * {{Gear|S2|Headgear|Designer Headphones|16}}
 * {{Gear|S2|Headgear|Stealth Goggles|16}}
 * {{Gear|S2|Headgear|Skate Helmet|16}}
 * {{Gear|S2|Headgear|Paisley Bandana|16}}
 * {{Gear|S2|Headgear|B-ball Headband|16}}
 * {{Gear|S2|Headgear|Golf Visor}}
 * {{Gear|S2|Headgear|Gas Mask}}
 * {{Gear|S2|Headgear|Squid-Stitch Cap}}
 * {{Gear|S2|Headgear|White Arrowbands}}
 * {{Gear|S2|Headgear|Squid Nordic}}
 * {{Gear|S2|Headgear|Zekko_Mesh}}
 * {{Gear|S2|Headgear|Jogging Headband}}
 * {{Gear|S2|Shoes|Banana Basics}}
 * {{Gear|S2|Shoes|Cream Hi-Tops}}
 * {{Gear|S2|Shoes|Custom Trail Boots}}
 * {{Gear|S2|Shoes|Icy Down Boots}}
 * {{Gear|S2|Shoes|LE Lo-Tops}}
 * {{Gear|S2|Shoes|Punk Yellows}}
 * {{Gear|S2|Shoes|Red Work Boots}}
 * {{Gear|S2|Shoes|Roasted Brogues}}
 * {{Gear|S2|Shoes|Yellow Seahorses}}
 * {{Gear|S2|Shoes|Yellow Seahorses}}

Shown in the Nintendo Direct on {{date|2018-03-08}}, but not yet in-game: }} }} {{Collapse| Neither confirmed nor disproved yet
 * {{Gear|S|Headgear|Tentacles Helmet}}
 * A new / scrapped special weapon, internally named "Bazooka"{{Explain|This is not the Inkzooka, which was internally named 'SuperShot'|*}}.
 * Returning stage Flounder Heights.
 * New Ranked mode, codenamed "Rocket" with a unique object (vRocket) and weapon (vRocketNozzle). Hacking a work-in-progress version into the game shows a mode where a rocket object that is launched by shooting ink at it, and an ink pump weapon that can be used to continue advancing once control of the rocket is gained.
 * New Ranked mode, codenamed "Rocket" with a unique object (vRocket) and weapon (vRocketNozzle). Hacking a work-in-progress version into the game shows a mode where a rocket object that is launched by shooting ink at it, and an ink pump weapon that can be used to continue advancing once control of the rocket is gained.

{{Collapse| Unconfirmed returning gear Note: All returning gear in the leak has the same Ability, Brand and Rarity as their Splatoon incarnation. This is true for both the confirmed returning gear (none of which have changed since the leak) as well as the unconfirmed items. }} }}
 * {{Gear|S|Clothing|Octoling Armor|16}}
 * {{Gear|S|Shoes|Octoling Boots|16}}

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 3.0.0 changes:

2018-07-12 Update
On 2018-07-12, LeanYoshi updated the data for the from the 3.2.0 update which changed its Special from  to

"Mirror" and Ancho-V Games datamine
On June 30th OatmealDome posted on his blog about two upcoming datamined stages, a new one codenamed "Mirror" and Ancho-V Games
 * "Mirror"
 * Similar to Saltspray Rig with Mirror symmetry
 * However it is not Saltspray Rig as its codename in Splatoon is "SeaPlant"
 * The map appears to be based on a theater due to the test object names.
 * The Splat Zone, Tower, and Rainmaker appear on the line of symmetry
 * Ancho-V Games
 * The beginning areas of the map have been redesigned
 * For example, the Spawn Point is placed further back.
 * 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". Has the appearance of a bee keeping mask
 * Two new Salmon Run Clothing labeled ""Clt_COP107" and "Clt_COP108". "Clt_COP107" appears to be a store clerks apron with a nametag while "Clt_COP108" has the appearance of a gym track suit 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 update 3.1.0 and found new details about gear, weapons, and maps.
 * 2 new Salmon Run Rewards.
 * The Cap used while playing Salmon Run.
 * A white Do-Rag
 * 4 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 inkling appears and it get bigger and bigger, when thrown it explode like the 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 June 9th, 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 8-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/leaks that have been confirmed true.

Prima Strategy Guide "Coming Soon" section
The Prima Strategy Guide for Splatoon includes a "Coming Soon" section which shows off weapon and stage DLC. 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 DLC weapons, stages, and modes. Also, some pictures and explanations about the new ranked mode games: 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, 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 2.2.0.

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

On 2016-04-30, Splatoon JP finally announced that Squid Sisters's Amiibo will be released at 7th July 2016.

Busted
This is a list of rumors/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 9th of June, 2015, 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 the button, 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 were found. These images supposedly depicted new Sunshine-related gear and Octo Valley missions. August 14th passed, and nothing like this was added, confirming it as false.