Rocket League developer Psyonix had the technicality of Rocket League Items  cross-community multiplayer already discovered, it just needed policy changes.

Rocket League might be the primary recreation to assist pass-platform multiplayer between Xbox One and PlayStation 4, as soon as the legalities are all discovered.

Developer Psyonix had already locked down a technical solution for this to work. “The most effective thing we ought to do now could be sort of discover where we stand politically with all and sundry, after which it’s complete steam in advance to finish the answer that we’ve already started,” vice chairman Jeremy Dunham instructed Gamespot.