Nintendo has provided additional details on Super Smash Bros. Ultimate with some technical info and more on GameCube Controller support.
Super Smash Bros. Ultimate will run in 1080p or full-HD 1920 x 1080 resolution and 60fps while docked. On portable and tabletop modes, the game will run at 720p or 1280 x 720 resolution at 60fps.
In addition to the Joy-Con and Nintendo Switch Pro controllers, Super Smash Bros. Ultimate will support GameCube controllers. A GameCube Controller with a new design will also be released.
Players will need a GameCube Controller Adapter to use the controller. A new GameCube Controller Adapter for Nintendo Switch will also be available later, but those with the Wii U version will be able to use those as well.
Super Smash Bros. Ultimate releases on December 7, 2018 for Nintendo Switch.