Rocket League is going to ring in Independence Day with a retail release.
505 Games announced today that Rocket League: Collector's Edition will hit on PC, PlayStation 4, and Xbox One on July 5. It will include the Supersonic Fury and Chaos Run DLC packs, along with four new vehicles. Those vehicles are said to be making their 'debut' in the Collector's Edition, so they're bound to be sold separately at some point.
Rocket League released digitally last year, and quickly achieved high popularity for its multiplayer hooks. It has sold four million copies digitally, and made an appearance in the top five of our 2015 Game of the Year.