That's already been posted, but it's worth noting that that was five races into the season versus day one of testing.
We can probably safely expect a better delta by Spain this year. Question is where that puts them in the mix.
Looks like the nose is the one unchanged part from the FW42.
The goat belly is actually a very nice organic shape, I think it resolves the conflicting demands of having four different flow streams around there - under, over, side, of sidepod, and the more horizontal flow along the side of the airbox/central spine - being almost circular in cross section air is never going along the 'wrong' vector.
the four immutable forces: