The new down sloping engine cover panels permit those new convex large tall deep louvres (haven't seen those yet on any Ferrari '22-'23; usually much SMALLER and more numerous).
Neu:
source: motorsport network italia
Same panel with smaller louvers (prev race):
source: unknown
The previous panel in that area (previous sidepod shape) could not accommodate convex louvers on the cockpit shoulders:
source: unknown
Worth noting the new sidepod concept seems to eliminate forward louvers f.e. there is no longer any room for the prev black louver panel.