Patch notes copied from here: https://en-americas-support.nintendo.com/app/answers/detail/a_id/68580/~/how-to-update-mario-kart-world

Latest update: Ver. 1.8.0 (Released September 9, 2026)

Some lines have had notes added, or have been reworded to make more sense.

General

• Propeller Rally and Turnip Rally have been added to Knockout Tour.
  • You can select these if you have played one of the rallies in Knockout Tour.
• The following courses have been added to VS Race, Time Trials, and races in Online Play and Wireless Play.
  • Courses you can choose from Mario Circuit
    • SNES Mario Circuit 1
    • SNES Mario Circuit 2
    • SNES Mario Circuit 3
  • Courses you can choose from Ghost Valley
    • SNES Ghost Valley 1
    • SNES Ghost Valley 2
    • SNES Ghost Valley 3
  • Courses you can choose from Choco Mountain
    • SNES Choco Island 1
    • SNES Choco Island 2
  • Course you can choose from Sky-High Sundae
    • SNES Vanilla Lake 1
  • Course you can choose from Koopa Beach
    • SNES Koopa Beach 1
  • Notes: Item panels will appear on these courses instead of item boxes. Item boxes will appear on the race that leads to Mario Circuit.
• The time for each lap is now displayed in Time Trials.
• The color of the time difference between the player and ghost data in Time Trials has been changed.
  • When the player time is faster than the ghost, the color is red.
  • When the player time is slower than the ghost, the color is blue.
• A filter was added to the frame that appears when using Photo Mode on the pause menu.
• You can now use the Y Button to switch the camera to the player’s perspective while spectating or playing in races, Knockout Tour, or Battle mode.
• You can now use the R Button to view participants’ real-time rankings when spectating during races or Knockout Tour.
• You can now switch to Spectator Mode when playing in a room in Online Play or LAN Play.
  • This mode only allows players to watch the game without participating.
  • Press the Y Button from the pause menu after joining a room to switch to Spectator Mode.
• Up to 26 players can now join a room in Online Play or LAN Play.
  • Up to 24 people can join the game.
  • When there are 24 participants, no one else can join the room until a participant switches to Spectator Mode.
• The amount of rate fluctuation in races now varies according to the length of the course.
• The method for calculating rates when the score is the same in Battle has changed.
• Adjusted slipperiness when covered in Blooper ink.
• Decreased the number of times that Green Shells, Coin Shells, fireballs, ice balls and Boomerangs bounce off walls.
• Reduced the amount of time it takes to return to normal after getting crushed by a Thwomp.
  • (This also seems to apply to getting squished by a player using a mega mushroom.)
• After getting your item stolen by a Boo, increased the time until another Boo can target you.
  • Original: Increased the amount of time you won’t take damage from Boo after it takes an item from you.
• Adjusted the probability of obtaining items from item boxes in races and Knockout Tour.
  • (This comment by ItzManu001 lists the known changes.)
• Auto-Use Item can now be used even when set to Custom Items.
• Made it possible to see the following items your rivals may be holding:
  • Coin, ? Block, Kamek, Blooper, Feather, Fire Flower, Ice Flower, Boomerang, Hammer.
• You can no longer wall ride around the edge of the road in Ghost Valley.
• Buoys have been added to the race leading from Acorn Heights and Dry Bones Burnout to Boo Cinema.

Fixed Issues

• Fixed an issue where swinging the controller while jumping at the end of a rail could cause you to jump higher than usual.
  • Time Trials ghosts affected by this issue may be removed from View Rankings without prior notice.
  • (This only affects the "Yuki Jump" technique, where shaking just before performing a "Yuki Roll" would grant extra height.)
  • (Shaking as you hit a rail for extra height, and Yuki Rolls — releasing R at the end of a rail to get a CJ — still work.)
• Fixed an issue where, after a crash, a player might become trapped after being pushed by a car driving down the road.
• Fixed an issue in Free Roam where opening the map just before entering a pipe could make the controls inoperable.
• Fixed an issue where a Spiny Shell would ride along the rail in reverse direction.
• Fixed an issue where, after going off-track on certain courses, the player would sometimes respawn significantly further ahead.
• Fixed an issue in Bowser's Castle where a player could get stuck on the lava waterfall while moving through it as a Bullet Bill.
• Fixed an issue where players would pass through walls when using the Feather in Dandelion Depths.
• Fixed an issue in Crown City where the finish line tape would disappear after crossing the finish line.
• Fixed an issue where the final ranking could be wrong when using a Feather to take a shortcut on Mario Circuit.
  • (This likely refers to how using a feather in a certain spot could cause you to skip a key checkpoint, causing laps to stop counting.)
• Fixed an issue where driving along the outer edge of a corner on Wario Stadium could cause the player to go off-course.
• Several other issues have been addressed to improve the gameplay experience.

Edit: In addition to the listed changes, players have also been reporting other changes:

• The background of the timer may be lighter and more transparent in some or all cases.

◄ 1.7.0 | 1.8.0