And looking at the part number 3 on the bargeboard here, I think Renault might be planning to add "Aldo Costa moustaches" above them, on the nose, and that the part number 3 has no purely aerodynamik role but is also designed to hide the upcoming moustaches (when the car is seen from below, as the rules request)
In fact, the 2007 R27 was the first car to use those wings, not the Ferrari 2008, AFAIR
Ans as you see, the R27 bargeboard has a similar "part nr3" just below the "moustaches", in their shadow...
Just a guess. Im probably wrong