It appears that a new mode has been leaked for Super Smash Bros. Ultimate in a new ad by Nintendo that gives us a look at an updated screen of the main menu.
You can check out the commercial in the above video that shows a glimpse of the menu early on, and upon closer inspection of the bottom right part it shows what appears to be “Stage Builder” to the right of the amiibo menu.
In any case, it seems like it’ll be part of the upcoming 3.0 update, so perhaps we’ll be hearing about it more from Nintendo in the near future.
Super Smash Bros. Ultimate is available on Nintendo Switch.