Yeah!!!I got new informations about MK Wii:

-The Feature of use mii in the game,have to be unlocked!!

-I got some news about secret characters:

********SPOILERS***********

(Don´t read the words ahead if you don´t want to now about secret characters)-Bone Bowser,King Boo,Rosalina(Mario Galaxy Princess) and Dry Bones.

-The new Rainbow road is one of the best tracks ever!!!

-50 cc its a bit slow,If you want to play the best of Mario Kart,Play on 150 cc

-Diddy Kong will be into the game,and he doesn´t will be a secret character.