Alfa Romeo has announced upgrades for its 2024 Giulia and Stelvio Quadrifoglio models in Europe, the UK, and China. These special editions are part of a "100th Anniversario" celebration, with each model limited to 100 units. Both models now have 520 horsepower and a mechanical self-locking differential with tuning from the Giulia GTA. Visual tweaks include gold brake calipers, a "1923-2023" inscription on the fender badge, and carbon fiber elements inside and out. Orders for these special editions will start in the spring and will be available in the third quarter of 2023.