It adds online lobbies, spectator mode, and PlayStation 4 cross-play.
Version 2.0 Update
The version 2.0 update gives players, for the first time, access to online lobbies, spectator mode and cross-play on PlayStation 4. The new addition allows up to eight players to join together in an online lobby to battle against each other. Up to four different matches can run simultaneously, and all participants can spectate online while they are on deck.
The version 2.0 update also opens up cross-play on PlayStation 4, so players across Nintendo Switch, Xbox One, PC, and now PlayStation 4, can all battle each other in the same matchmaking pool for global supremacy.