i am excited about 4 player chess available on chess.com website.then why not you added 4 player chess option in chess.com app?
test

@Martin_Stahl, teams was a feature for a while.
You can find some information (such as why it was removed) at the club:
https://www.chess.com/club/4-player-chess
Official statement:
We have temporarily removed 2vs2 till we attain more players and can improve the mode significantly (play with a friend, separate leaderboards, etc) Thanks for understanding!
Teams will be back, don't worry.
@pareshdevrukhkar, the current version is only a prototype. It can only be played on a browser (not supported on the chess.com app). I think it is safe to assume that it will be supported on the chess.com app eventually.
I don't think the 4-Player Chess, https://www.chess.com/4-player-chess, had teams.
BugHouse, on the other hand, did. https://www.chess.com/article/view/how-to-play-variants-on-chess-com