According to a Nintendo survey recently, the possibility is real. 
Taken from Joystiq.com
This would be a great addition to the Nintendo Wii. Honestly, game demos are one of the few complaints I have about the system. It'll be nice knowing if games warrant a $50 price tag or not.


It's inconceivable to us why Nintendo doesn't offer demos for its Wii games. Besides being a cool freebie to entice people to buy a system, easy access to demos leads to better sales of full games. Sony and Microsoft figured this out years ago, offering PlayStation, PS2 and Xbox demo discs with their official magazines and, later, downloadable demos for the Xbox 360 and PS3. Nintendo still hasn't caught up on this important front.
So it's heartening to see the Big N mulling over demo availability in the new issue of Nintendo Power. According to a scan provided by a GoNintendo reader , the latest Player's Pulse contest poll asks readers how interested they are in Wii game demos, how they would like to receive such demos, and whether they would be willing to pay extra for them.
While downloadable demos for full Wii games might be tough to cram onto the Wii's puny 512MB of built-in memory, a demo disc in Nintendo Power seems like an idea whose time has come ... ten years ago! And while we're at it, how about some try-before-you-buy demos for the Virtual Console too, eh Nintendo? We're growing increasingly impatient here.
Taken from Joystiq.com
This would be a great addition to the Nintendo Wii. Honestly, game demos are one of the few complaints I have about the system. It'll be nice knowing if games warrant a $50 price tag or not.
