Nintendo Powers Mystery unveiled Sonic with a Sword?

The mystery of the back page of last issues Nintendo Power has been lifted, as the latest issues cover shows off a brand new Sonic the Hedgehog game, exclusive to Wii. The game, titled Sonic and the Black Knight shows Sonic brandishing a sword with part of a suit of armour covering his hand. More details should be released once the rest of the issue hits the internet, but for now speculation runs rife that the game may be using the newly announced MotionPlus. Whats next, a Sonic game with guns?