Coming from a GamesTM interview with director Yusuke Amano and producer Hisashi Nogami...
On voice chat
“The reason we included voice chat is because we wanted users who already know each other to enjoy the game more deeply using a communication tool that’s linked to the game.” - Amano
“Voice chat can only be used when playing with someone you know, such as in private matchmaking; voice chat with someone you don’t know in random matchmaking won’t happen.” - Nogami
- better integration of unlocks from the Hero, Battle and Salmon Run Modes into all multiplayer modes
- you can also use some of the unlocks from multiplayer mode in Hero Mode