A new Rocket League update has arrived, adding support for PlayStation 4 Pro, new Hot Wheels DLC cars, and other Hot Wheels items, among other things. Here is a rundown of the new content:Two Hot Wheels DLC Cars -- Twin Mill III and Bone Shaker. Available for $2 each.Free Hot Wheels Content -- Get a Hot Wheels topper and antenna.Other Items -- Free Treasure Hunt flag and Shark Bite topper.Player's Choice Crate -- Includes "some of the community's favorite customization items."As for the PS4 Pro update, it allows the game to run at 4K and 60 FPS on a PS4 Pro, or 1080p and 60 FPS on a standard PS4.