Just Dance 2021 will allow cross-play between 6 platforms

Just Dance 2021
Release Date: Nov 12, 2020
Official Website: Link
Supported game modes:
  • Single player
  • Multiplayer
  • Co-operative
Crossplay platforms:
Just Dance 2021 will support cross-play across multiple platforms. It will be possible to play together with your friends on Playstation 5, XBox Series S/X, Playstation 4, XBox One, Nintendo Switch and Google Stadia. Please check out all the details on the game's official website!
Cross-Platform Combination Details:
Source: Link
Additional Info: You will not be able to directly challenge your friends online, but you may come across them - amongst many other dancers - on the World Dance Floor.
Summary:
Over 40 New Songs and Universes – There’s plenty of music for everyone in Just Dance 2021, including “all the good girls go to hell” by Billie Eilish and “Don’t Start Now” by Dua Lipa. It’s never been easier to start dancing with the new quickplay mode. For those looking to get straight to playing, the game will have a randomized playlist ready from the Start menu. Improved World Dance Floor – Challenge fellow Just Dancers from all over the world during permanent tournaments. You will be matched with players of a similar level as yours for a fair dance battle.
Genres and Themes:
Music
Party
Screenshots:
Image 1Image 2Image 3Image 4
Artworks:
Image 1
Supported game modes:
  • Single player
  • Multiplayer
  • Co-operative