Rocket League to Get Cross-Platform Party Support in 2018

It looks like the popular vehicular soccer game Rocket League is set to see cross-platform party support in 2018, building off of its cross-platform play functionality.
When asked on Twitter whether the feature was coming, the official support account for the game replied, saying "We’re actively working on cross-platform party support for a 2018 release."
This is in line with Psyonix's roadmap released towards the end of last year, in which the developer said it intended to roll out PsyNet