@ Adamski
Good spot initially. And there was more to the sidepods than just the angle of the photo.
Mercedes have brought almost a 'B-spec' version of their car to Monaco. It features the new nose seen in Spain, as well as new sidepods and this new rear suspension/brake set-up. The left-hand drawing shows the older solution with the brake callipers located vertically, in front of the rear axle. The right-hand drawing is the new solution with horizontally-placed callipers below the axle, which reduce the centre of gravity of the rear suspension. Together with the car's lighter carbon gearbox case, this revised set-up helps the drivers to have better control of the rear tyres.
Mercedes have changed many bits on the car, including a new nose and a different gearbox(carbon cased) along with a different rear suspension configuration.
I'm of the firm belief they had the fastest car around Monaco, backed up by Schumacher's pole and Rosberg's ability to stay close to Webber lap after lap. Not more than 1.8 seconds barring pit stops.
What Canada will hold for them is anyone's guess. But those long straights will definitely help them as will the hairpin leading into the back straight, this W03 has immense low speed traction and will suit this section of the circuit.