Sega have announced a sequel to Sonic & Sega All Stars Racing, called Sonic & All Stars Racing: Transformed.
The apparent new feature is that the vehicles now, er, transform into planes/boats. Vyse from Skies of Arcadia has been confirmed as a playable character as well as Gilius Thunderhead from Golden Axe.
Trailer and Screenshots below.
The game is out later this year on PC (Digital Download), 360, PS3, Vita and 3DS. There may be a possibility of it being a Wii U Launch Title but Sega are keeping tight lipped about this.