http://www.jeux-france.com/news22177_mario-kart-wii-avec-des-motos-.html
Yay, Retro Cup returns!!!! (of course I already noticed the Yoshi Falls course from from Mario Kart DS in the first movie.. still, good confirmation). Looks like they really touched up the graphics too so they are a bit more detailed.
Check it out:
Some SMK Course (who knows, they all look alike): http://www.jeux-france.com/images2_4_22177.html
DK Mountain (Double Dash): http://www.jeux-france.com/images9_4_22177.html
Sherbert Land (MK64): http://www.jeux-france.com/images10_4_22177.html
Moo Moo Farm (MK64): http://www.jeux-france.com/images6_4_22177.html