Rocket League is coming to Xbox One! Rejoice, fans of exploding cars chasing massive balls! Does that mean you'll be able to play with PS4 and PC players? Err...
That would be negative, according to Rocket League's official Twitter account. It's not that developer Psyonix hates to idea, more that the console won't let it:
@rlpte The Xbox platform doesn't allow for crossplay matchmaking between other systems as a general practice across all titles.
— Rocket League (@RocketLeague) December 4, 2015
Well, hopefully it'll get sorted out in the future, but for now, if you want a rich base of drivers to face off against, it's PC or PS4 for you.