- Added Circuit of the Americas as DLC content.
- Added Indianapolis Motor Speedway as DLC content.
- Added Watkins Glen International as DLC content.
- Added bonus liveries from the 2022 GTWCHAM season for all players (via Open Series).
- Added all full-season liveries from the 2022 GTWCHEU season for all players (via Open Series).
- Added support for new DLC tracks in custom championship (via Open Series).
- Fixed mass driver duplication when playing against the Lamborghini Huracán ST EVO2.
- Fixed ever-increasing memory usage when refreshing unfiltered server list.
- Added new nationality options.
- Tweaks in GT4 slick tyres rolling resistance, camber simulation, combined grip.
- Tweaks in Wet tyres.
- Fuel consumption tweaks for Bentley, Porsche 992 Cup, Ferrari 488 GT3 EVO, Porsche 991.2 GT3 and more.
- BOP tweaks for Bentley, Aston Martin V8.