they just decreased the weight to keep power/weight ratio. that doesn't mean that they will not use ballast in the back. they can reduce weight in other areas to keep the car balanced.
That's some work required then. Why not just leave the weight and increase the power (restrictor) ?
Next stage will be one of most crucial ones. Big elevation change, completly new stage and quite big long... I think we will see a couple a mistakes
[WRC] Acropolis Rally 2025