Yesterday we reported that Psyonix's incredibly popular Rocket League is, in fact, coming to Switch and that it has cross-platform support (meaning multiplayer against people on other platforms).
Now Psyonix has defined this feature further on Rocketleague.com, but it turns out one of the formats isn't participating: Playstation 4:
"Online Multiplayer supports up to eight players, and Cross-Network play will be supported as well, allowing Switch players to hit the field with players on Steam and Xbox One."
This means that PlayStation 4 gamers still only get to play against others with the same console, while everyone else can play together. It does indeed sound a little counter-productive for Sony who claims Playstation 4 is "for the players".
This is, for the record, the second game in recent times where Sony refused cross-platform gaming for their users. Jez Corden recently revealed on Twitter that this applies to Minecraft as well.
Clarification: Those playing on PS4 can play with PC-based players, just not those on other consoles.