The Forzathons keep on rolling! Recently, Turn 10 added achievements for all Forzathons until the end of January 2018. That means that we don't necessarily know the names of the events themselves, but we know what prizes are up for grabs, how to win them, and when the events happen. Lots of cars that have been prizes in previous Forzathons, but also some cars that were only available through wheelspins early in the came (e.g. the Lambo Huracan HE).

Here's the list:

• Grand Touring (Nov 3–8):
  • Moonlit Drive: Complete a Street Race to win 55,000 CR.
  • Living Sideways: Perform 20 Drift Skills to win 3 Wheelspins.
  • Packaged Performance: Complete a Championship in a GT or Super GT car to win the Subaru BRZ Horizon Edition.
  • Hittin' Heavy: Win a Playground game in a Sports Utility Hero to earn 35,000 XP and the Porsche Macan Turbo.
• Forzathon Time to Race (Nov 10–15):
  • Goin' Fast: Perform 20 Speed Skills to earn 35,000 XP.
  • X-Hanced: Get 3 Stars on the Surfers Bridge Speed Trap in the Ariel Atom 500 V8 to win 3 Wheelspins.
  • Champions Wanted: Complete a Championship in an Extreme Track Toy to win the #17 XBOX Racing Ford Falcon.
  • Victory Podium: Win a Race in the #17 XBOX Racing Ford Falcon to receive 90,000 CR.
• Forzathon Horizon Harvest Returns (Nov 17–27):
  • Gather & Feast: Complete a Co-Op Race in Vans and Utility to receive 90,000 CR.
  • Harvest Time: Perform 30 Landscaping Skills to win the Porsche 944 Turbo.
  • Fly to the Table: Perform 20 Air Skills in a GT car to win the Bentley Continental Supersports.
  • (Black Friday Deals: SALE - 30% off everything in the Autoshow)
• Forzathon Time to Rally (Dec 1–7):
  • Mud-Sport: Win a Race in a Retro Rally car to win 3 Wheelspins.
  • Put on a Clinic: Complete ANY event in a Modern Rally Car to receive 55,000 CR.
  • Time Trials: Perform 20 Speed Skills in a Retro, Class, or Modern Rally car to earn 25,000 CR.
  • Passing Through: Perform 3 Triple Pass Skills in [a] Classic Rally car to win the #75 [Subaru] WRX STi and 55,000 XP.
• Forzathon Oversteer to Success (Dec 8–14):
  • Three-Star Performance: Get 3 Stars on a Drift Zone to earn 55,000 XP.
  • Sideways Livin': Perform 20 Drift Skills to receive 35,000 CR.
  • Drop the Flag: Complete a Flag Rush match in a BMW to win 3 Wheelspins.
  • Lapping It: Complete 5 Races in a BMW to win the BMW M4 Horizon Edition.
• Forzathon Trudging Through (Dec 15–21):
  • Bugging Out: Create a Bucket List Challenge in Yarra Valley or Blizzard Mountain with a Buggy and earn 35,000 XP.
  • This Can Go Faster: Perform 20 Speed Skills in a Buggy to win 3 Wheelspins.
  • Wreckin' All the Way: Perform 35 Wreckage Skills in a Buggy to win 25,000 CR.
  • Tube Frame: Win a Race in the Hot Wheels Rip Rod or Alumi Craft Class 10 Race Car to receive the Gurkha LAPV.
• Forzathon TBA (Dec 22–28):
  • Sleigh Bells: Create and complete a Bucket List Challenge in Yarra Valley to win 3 Wheelspins.
  • Candy Cane Lane: Complete a race in a Class A car to win the Jaguar XJ220 Horizon Edition.
  • Naughty or Nice: Perform 10 Wrecking Ball or Clean Start Skills in a Class B car to receive 55,000 CR.
  • Checking it Twice: Win a Race in a Class C car to win the Porsche 911 Turbo S.
• Forzathon New Year's Special (Dec 29–Jan 4):
  • Noisemakers: Beat a Rival to win 3 Wheelspins and the Steam Boat Horn.
  • Bring on the Fireworks: Complete an Online Race to receive 95,000 CR.
  • Time to Party: Complete 3 Playground Games in a GT Car to win the Porsche Carrera GT.
  • Happy New Gear: Sale - 30% off all cars in the Autoshow!
• Forzathon Spend Money to Make Money (Jan 5–11):
  • Bank It: Perform 10 Ultimate Skill Chains to earn 95,000 XP.
  • Rolling In Credits: Spend more than 2,000,000 CR on a car to win 3 Wheelspins.
  • Mo' Racing, Mo' Money: Complete a Race to receive 120,000 CR.
  • Motor Mogul: Buy or Sell 3 cars on the Auction House to earn the Ford F-150 Raptor Horizon Edition and 55,000 XP.
• Forzathon Locking Horns (Jan 12–18):
  • Bullish: Complete 3 Speed Zones in a Lamborghini to win 3 Wheelspins.
  • Going Fast: Complete 20 Speed Skills to receive 35,000 CR.
  • Once a Century: Win a Championship in the Lamborghini Centenario to win in [sic] the Lamborghini Sesto Elemento.
  • Perform 20 Awesome Air Skills to win the Lamborghini Huracan Horizon Edition.
• Forzathon Hot and Heavy Horizon (Jan 19–25):
  • That's Fast: Perform 20 Speed Skills in a Modern Supercar to win the 2012 Porsche 911 GT2 RS.
  • Flies Pretty Well: Perform 20 Kangaroo Skills in an Offroad vehicle to win the M12S Warthog CST.
  • Choices, Choices: Win a Race in the Warthog or 2012 Porsche 911 GT2 RS to receive 95,000 CR.
  • This or That: Sale - 30% off Modern Supercars and Offroad Vehicles.
• Forzathon Heritage of Speed (Jan 26–Feb 1):
  • Off the Line: Perform 30 Burnout Skills to receive 35,000 CR.
  • Racing History: Complete a Race in a Ford to earn 55,000 XP and 55,000 CR.
  • Competitive Legacy: Win a Championship in the Ford MkII GT40 to receive the 2017 Ford GT Horizon Edition.
  • High-Performance Endurance: Play 3 Playground Games in the 2017 Ford GT HE to win 3 Wheelspins.

Not sure what's up with some of these only having 3 events. Maybe they'll add one later, maybe not. Either way, I'll keep an eye out and post updates as things come in. Note also that most of these Forzathons last a week, whereas they've previously gone over the weekend. More time to pick up stuff! The first Forzathon for November is now on and you can pick up CR, XP, wheelspins, and two cars: the Subaru BRZ HE, and Porsche Macan Turbo. Happy hunting!

Edit Nov 10, 2017: Added title of the "Time to Race" Forzathon.
Edit Nov 17, 2017: Added title of the "Horizon Harvest Returns" Forzathon.
Edit Dec 1, 2017: Added title of the "Time to Rally" Forzathon.
Edit Dec 9, 2017: Added title of the "Oversteer to Success" Forzathon.
Edit Dec 16, 2017: Added title of the "Trudging Through" Forzathon.
Edit Dec 30, 2017: Added title of the "New Year's Special" Forzathon, and its Happy New Gear discount.
Edit Jan 5, 2018: Added title of the "Spend Money to Make Money" Forzathon.
Edit Jan 12, 2018: Added title of the "Locking Horns" Forzathon.
Edit Jan 27, 2018: Added title of the "Hot and Heavy Horizon" and "Heritage of Speed" Forzathons.