The now 5 year old classic Rocket League is going free to play this summer but only in the Epic Game Store, it will support cross play. Sales on the Steam page will be no longer avaiable but support for all the gamers that purchased it on Steam will continue and as a bonus they will be rewarded with Legacy status, which includes:
All Rocket League-branded DLC released before free to play
"Est. 20XX" title that displays the first year you played Rocket League
200+ Common items upgraded to "Legacy" quality
Golden Cosmos Boost
Huntress Player Banner
more details and date to be announced soon.