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Based on the original thread format by @Johnnypenso
For every update released, there is the potential for changes not listed in the initial patch notes. Please report any undocumented changes you find in the current update and I'll update the OP as much as possible to reflect those changes found.
1. It is encouraged that you make an effort in verifying these changes as much as possible, either through videos or images.
2. If you need help from the community to verify something, don't be afraid to ask.
3. It is strongly advised that you be as specific and detailed as possible with the information including a brief description of the bug or improvement before it was fixed/changed (if applicable) and how. If English is not your first language that's ok, just do it to the best of your ability.
THIS IS NOT A DISCUSSION THREAD ABOUT THE OFFICIAL CHANGES Only any changes not listed on the official site are discussed here
THIS IS NOT A DISCUSSION THREAD ABOUT THE PROS AND CONS OF THE UPDATE or anything else other than undocumented changes in the update. Keep those strictly to the appropriate threads:
Update (1.20)
Documented Changes
1. Cars- The following three new cars have been added:
・McLaren MP4/4 '88 (Purchasable at 'Legend Cars' from 26 August)
・Pontiac GTO 'The Judge' '69 (Purchasable at 'Legend Cars' from 26 August)
・Porsche Cayman GT4 '16 (Purchasable at 'Brand Central')
2. Dior Collaboration
- The ‘De Tomaso Mangusta (Christian Dior)’ has been added, developed in collaboration with Dior. The 'De Tomaso Mangusta (Christian Dior)' will be purchasable in the 'Legend Cars' pavilion from 25 August. Also, when driving this car the racing suit and helmet are automatically changed to the exclusive collaboration gear versions;
- A new special conversation regarding the De Tomaso Mangusta (Christian Dior) has been added to a Character appearing at the Café. This new conversation can be experienced by changing into this car from the 'Garage' and speaking with the Character located at the Café.
3. Tracks
- Three new layouts have been added to the ‘Circuit de Barcelona-Catalunya':
・Circuit de Barcelona-Catalunya GP Layout No Chicane
・Circuit de Barcelona-Catalunya National Layout
・Circuit de Barcelona-Catalunya Rallycross Layout
The maximum number of cars that can be on track at Circuit de Barcelona-Catalunya Rallycross Layout is 16.
4. Café
- The following two Extra Menus have been added:
・Extra Menu No. 6: ‘Collection: Abarth’ (Collector Level 27 and above);
・Extra Menu No. 7 ‘Collection: Gr.2 Racing Cars’ (Collector Level 38 and above);
The new Menu Books and Extra Menus will appear after clearing Menu Book No. 39 ('Championship: World GT Series') and having watched the ending.
5. World Circuits
- The following new events have been added to 'World Circuits':
・Circuit de Barcelona-Catalunya
- European Sunday Cup 500
- Porsche Cup
- World Touring Cars 600
- World Rally Challenge
The 'European Sunday Cup 500' and 'Porsche Cup' will become available upon unlocking the 'Circuit de Barcelona-Catalunya,' while the 'World Touring Cars 600' and 'World Rally Challenge' will appear after clearing Menu Book No. 39 ('Championship: World GT Series') and having watched the ending.
6. Scapes
- The ‘Canadian Rockies’ location has been added as a featured Curation in Scapes.
7. Brand Central
- A ‘GT AWARDS’ logo is now displayed on cars that won the GRAN TURISMO AWARDS SEMA (GT Awards). The logo will be displayed on the Garage top screen as well as in Brand Central.
Other Improvements and Adjustments
1. Physics Simulation Model- Adjusted the suspension geometry;
- Adjusted the simulation for tyre heat generation and wear ratio. This adjustment makes it easier to see the remaining tread;
- Altered the simulation of the differential gear (with a Fully Customisable LSD). As a result, it's now more effective when decelerating and provides a much smoother driving performance;
- Adjusted the Performance Points (PP) of some cars;
- Changed the conditions for mechanical damage occurring from a collision or contact if 'Mechanical Damage' is set to ‘Light’ or Heavy’ in the race settings.
2. Controllers
- Adjusted the performance of the wireless controller.
3. Sound
- Adjusted the sound effects so that it is easier to hear the difference in sound between Stage 1 to 3 of the ‘Weight Reduction' modification.
4. Legend Cars
- Legend Cars (Hagerty Collection) prices have been revised based on real-life valuations from Gran Turismo partner, Hagerty.
Hagerty provides valuations and vehicle insurance for classic cars and has sponsored some historic car events in recent years.
New prices will be applied the next time a vehicle goes on sale. The next price revision is scheduled for November 2022.
5. Race Screen
- Fixed an issue wherein the ‘Weather Radar’ on the ‘Multi-Function Display’ would not function properly in event races with weather and time set.
6. Others
- Various other issues have been addressed.
Undocumented Changes
- Track limit Penalties on Sardegna 800 pp have been adjusted.
- The Toyota GR010 Hybrid has received a PP adjustment.
- The brakes of the Toyota GR010 have been adjusted.
- Damage has been adjusted, making cars more sensitive when going over Sausage curbs.
- Vibrations in Cockpit view have been greatly reduced.
- Traction control has been adjusted, allowing for significantly less power reduction.
- The hybrid system on the Porsche 918 has been fixed
- Tyre wear has received an adjustment, Cars will now pull to the side when there is sufficient wear...
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