For Rocket League the huge (1.9 GB big) Patch 1.38 and two new Fast & Furious DLCs (Dodge Charger RT and Nissan Skyline GTR R34) have been released for Linux on Steam. Here is the Changelog to the Patch:

Rocket League Patch Notes v1.38 CHANGES AND UPDATES Arenas Brightness on DFH Stadium (Day) and Champions Field (Day) has been reduced Fixed an issue with the grass in Champions Field (Day) on low detail The broken texture on Starbase Arc has been fixed Mac/Linux: Farmstead map visuals have been updated Lighting on Farmstead has been adjusted Urban Central boost locations are now consistent with other Standard Arenas BUG FIXES General Boost audio will no longer cut out when rapidly tapping the Boost button Season Reward Level progress should now display correctly at the end of Competitive matches Added additional checks to prevent undesired demolish scenarios reported since the Autumn Update Fixed several issues with in-game grass The appearance of grass on lower detail modes on PC has been updated as part of ongoing optimizations Fixed the item thumbnail for Halo toppers with a Black ‘Painted’ attribute Fixed a game crash issue related to the Season 4 Reward Trails The ‘Labyrinth’ Decal for Takumi has been fixed The Season 2 Reward Prospect Boost has been fixed Second player in splitscreen mode is not retaining color choices made in the garage Joining Free Play during join countdown blocks player from joining match KNOWN ISSUES Some players on Xbox One may still experience performance issues Restarting Rocket League can help solve this issue temporarily while we continue to investigate