Technicaly this is a Forza Horizon competitor, but figured it would interesting for this sub.

Spreadsheet Screenshot Index (up to down):

• Image 1: Seasonal Tunes - S34 Autumn (30th May - 6th Jun)
• Image 2: S34 Autumn (DLC Expansion Maps)
• Image 3: S34 New Reward Car Tunes

Spreadsheet Screenshot Index (up to down):

• Image 1: Seasonal Tunes - S34 Summer (23rd May - 30th May)
• Image 2: S34 Summer (DLC Expansion Maps)
• Image 3: S34 New Reward Car Tunes

New Reward Cars:

• 2022 Hyundai N Vision 74 - 80 points Series Reward
• 2021 Lamborghini Countach LPI 800-4 - 20 points in Summer (Week 1)
• 1986 BMW M635CSi - 20 points in Autumn (Week 2)
• 1980 Lotus Esprit Turbo - 20 points in Winter (Week 3)
• 1986 Citroën BX 4TC - 20 points in Spring (Week 4)

Monthly Rivals:

• Playa Azul Circuit in the 2021 Lamborghini Countach LPI 800-4
• Las Laderas in the 1980 Lotus Esprit Turbo
• Descansar Dorado Sprint in the 2020 Lotus Evija
• Los Jardines Circuit in the 2022 Hyundai N Vision 74

Misc:

• New Radio Station - Horizon Wave
• Evolving World
• Neon Highway
• Retrowave Drone Show
• Midnight at Horizon neon decorations
• Extended night cycle
• New Retrowave outfit
• Minecraft Creeper & Minecraft Enderman Helmets
• 3 New Badges
• 6 New Car Horns
• 28 New Horizon Retrowave EventLab props
• Bug fixes
• Fixed an issue where AI Traffic cars were not present in Street Races
• Fixed an issue where some players were getting "Forza Horizon Server Not Available" error message while trying to connect to the Auction House, Message Centre, Leaderboards or browse Liveries, Tunes and Vinyls
• Fixed an issue where players were not able to follow/unfollow creators via the Creative Hub
• Fixed an issue with the 2020 Audi TT RS where front fenders were disappearing when equipping the customized hood
• Series 35 Preview (next month) - Modern Horizons
• Highly Requested Car
• New Events
• New EventLab Props
• New Collectible

https://forza.net/news/forza-horizon-5-horizon-retrowave

Spreadsheet Screenshot Index (up to down):

• Image 1: Seasonal Tunes - S33 Spring (16th May - 23rd May)
• Image 2: S33 Spring (DLC Expansion Maps)
• Image 3: S33 New Reward Car Tunes
• Image 4: S33 New DLC Car Tunes

Spreadsheet Screenshot Index (left to right, up to down):

• Image 1: Seasonal Tunes - S33 Winter (9th May - 16th May)
• Image 2: S33 Winter (DLC Expansion Maps
• Image 3: S33 New Reward Car Tunes
• Image 4: S33 New DLC Car Tunes

Spreadsheet Screenshot Index (up to down):

• Image 1: Seasonal Tunes - S33 Autumn (2nd May - 9th May)
• Image 2: S33 Autumn (DLC Expansion Maps
• Image 3: S33 New Reward + DLC Car Tunes

Spreadsheet Screenshot Index (up to down):

• Image 1: Seasonal Tunes - S33 Summer (25 Apr - 2nd May)
• Image 2: S33 Summer (DLC Expansion Maps)
• Image 3: S33 New Reward + DLC Car Tunes

New Reward Cars:

• 2013 Chevrolet Summit Racing Pro Stock Camaro - 80 points Series Reward
• 2016 Ford GT #66 GTLM Le Mans - 20 points in Summer (Week 1)
• 2021 Hyundai #98 Bryan Herta Autosport Elantra N - 20 points in Autumn (Week 2)
• 2005 Mitsubishi #1 Sierra Sierra Enterprises Lancer Evolution Time Attack - 20 points in Winter (Week 3)
• 2017 Porsche #92 Porsche GT Team 911 RSR - 20 points in Spring (Week 4)
• 2024 Chevrolet Corvette E-Ray (returning) - Championship Reward in Spring (Week 4), or 181,000 CR in the Autoshow

Apex Allstars Car Pack DLC ($9.99/£7.99/9.99€):

Not included in Car Pass or Premium Edition

• 2018 BMW #1 BMW M Motorsport M8 GTE
• 2015 Cadillac #3 Cadillac Racing ATS-V.R
• 2020 Chevrolet #3 Corvette Racing C8.R
• 2018 Mercedes-AMG GT3
• 2020 Lexus #14 VASSER SULLIVAN RC F GT3
• 2019 Ferrari #62 Risi Competizione 488 GTE
• 2018 Porsche 911 GT3 R

Monthly Rivals:

• Sierra Verde Sprint in the 2018 BMW #1 BMW M Motorsport M8 GTE
• Bahia De Plano Circuit in the 2020 Chevrolet #3 Corvette Racing C8.R
• Bola Ocho Circuit in the 2021 Hyundai #98 Bryan Herta Autosport Elantra N
• Los Jardines Circuit in the 2005 Mitsubishi #1 Sierra Sierra Enterprises Lancer Evolution Time Attack

Misc:

• New EventLab props
• New outfits
• Fixed an issue where sometimes no inputs were registered after quick resuming the game
• General performance and stability fixes
• Series 34 Playlist Preview (next month) - Horizon Retrowave
• New Radio Station
• Highway Decorations
• New EventLab Props
• New Cars

https://forza.net/news/forza-horizon-5-Apex-AllStars

Spreadsheet Screenshot Index (up to down):

• Image 1: Seasonal Tunes - S32 Spring (18th Apr - 25th Apr)
• Image 2: S32 Spring (DLC Expansion Maps)
• Image 3: S32 New Reward Car Tunes
• Image 3: S32 New DLC Car Tunes

Spreadsheet Screenshot Index (up to down):

• Image 1: Seasonal Tunes - S32 Winter (11th Apr - 18th Apr)
• Image 2: S32 Winter (DLC Expansion Maps)
• Image 3: S32 New Reward Car + DLC Car Tunes

Spreadsheet Screenshot Index (up to down):

• Image 1: Seasonal Tunes - S32 Autumn (4th Apr - 11th Apr)
• Image 2: S32 Autumn (DLC Expansion Maps)
• Image 3: S32 New Reward Car + DLC Car Tunes

Spreadsheet Screenshot Index (up to down):

• Image 1: Seasonal Tunes - S32 Summer (28th Mar - 4th Apr)
• Image 2: S32 Summer (DLC Expansion Maps)
• Image 3: S32 New Reward Car + DLC Car Tunes

New Reward Cars:

• 2024 Ford Mustang GT - Asphalt Racers Reward
• 2023 Ford F-150 Raptor R - Offroad Racers Reward
• 2023 McLaren Artura - 20 points in Summer (Week 1)
• 2020 Audi TT RS Coupe - 20 points in Autumn (Week 2)
• 2003 Ford Mustang SVT Cobra - 20 points in Winter (Week 3)
• 2020 Jaguar F-Type SVR - 20 points in Spring (Week 4)

Acceleration Car Pack DLC ($4.99/£3.99/4.99€):

Not included in Car Pass or Premium Edition

• 2021 McLaren Sabre
• 2019 Ginetta G10 RM
• 1967 Shelby GT 500
• 2022 Ford Supervan 4

Monthly Rivals:

• River Scramble in the 2023 Ford F-150 Raptor R
• Vista Del Mar Sprint in the 2024 Ford Mustang GT

Misc:

• New EventLab props
• 2 Horizon Race-Off outfits
• Series 33 Playlist Preview (next month) - Apex Allstars
• New Cars
• New Collectible
• New EventLab Props
• New Events

https://forza.net/news/forza-horizon-5-Horizon-Race-Off

Spreadsheet Screenshot Index (up to down):

• Image 1: Seasonal Tunes - S31 Spring (21st Mar - 28th Mar)
• Image 2: S31 Spring (DLC Expansion Maps)
• Image 3: S31 New Reward Car + DLC Car Tunes

Spreadsheet Screenshot Index (up to down):

• Image 1: Seasonal Tunes - S31 Winter (14th Mar - 21st Mar)
• Image 2: S31 Winter (DLC Expansion Maps)
• Image 3: S31 New Reward Car + DLC Car Tunes

Spreadsheet Screenshot Index (up to down):

• Image 1: Seasonal Tunes - S31 Autumn (7th Mar - 14th Mar)
• Image 2: S31 Autumn (DLC Expansion Maps)
• Image 3: S31 New Reward Car + DLC Car Tunes

Spreadsheet Screenshot Index (up to down):

• Image 1: Seasonal Tunes - S31 Summer (29th Feb - 7th Mar)
• Image 2: S31 Summer (DLC Expansion Maps)
• Image 3: S31 New Reward Car + DLC Car Tunes

New Reward Cars:

• 2022 Aston Martin Valkyrie AMR Pro - 20 points in Summer (Week 1)
• 1968 Lancia Fulvia Coupé Rallye 1.6 HF - Championship Reward in Summer (Week 1)
• 2021 Volkswagen ID.4 - 20 points in Autumn (Week 2)
• 1975 Citroën DS 23 - Championship Reward in Autumn (Week 2)
• 2021 Mercedes-AMG SL 63 - 20 points in Winter (Week 3)
• 2002 Lotus Esprit V8 - Championship Reward in Winter (Week 3)
• 1992 Mercedes-Benz 500 E - 20 points in Spring (Week 4)
• 1966 Volkswagen Double Cab Pick-up - Championship Reward in Spring (Week 4)

European Automotive DLC Car Pack ($4.99/£3.99/4.99€):

Not included in Car Pass or Premium Edition

• 2021 Bentley Continental GT Convertible
• 1987 Mercedes-Benz AMG Hammer Wagon
• 2019 Jaguar XE SV Project 8
• 2020 Automobili Pininfarina Battista

Monthly Rivals:

• Plaza Circuit in the 2002 Lotus Esprit V8
• Reservorio Sprint in the 2022 Aston Martin Valkyrie AMR Pro
• Tunnel Run in the 2021 Volkswagen ID.4
• Lookout Circuit in the 2020 Automobili Pininfarina Battista

Misc:

• All classes added to Rally Adventure Rivals (C & D class)
• New EventLab props, ramps & shapes
• It is now possible to remove the wing from the 2022 Porsche Cayman 718 GT4 RS
• Series 32 Preview (next month) - The Horizon Race Off
  • Race Off Takeover
  • New Community Challenges
  • New Cars
  • New Collectibles

https://forza.net/news/forza-horizon-5-European-Auto

Spreadsheet Screenshot Index (up to down):

• Image 1: Seasonal Tunes - S30 Spring (22nd Feb - 29th Feb)
• Image 2: S30 Spring (DLC Expansion Maps)
• Image 3: S30 New Reward Car + DLC Car Tunes

Spreadsheet Screenshot Index (left to right, up to down):

• Image 1: Seasonal Tunes - S30 Winter (15th Feb - 22nd Feb)
• Image 2: S30 Winter (DLC Expansion Maps)
• Image 3: S30 New Reward Car + DLC Car Tunes

Spreadsheet Screenshot Index (up to down):

• Image 1: Seasonal Tunes - S30 Autumn (8th Feb - 15th Feb)
• Image 2: S30 Autumn (DLC Expansion Maps)
• Image 3: S30 New Reward Car + DLC Car Tunes