Nah I think Nintendo are grasping at straws with this. Just another gimick for their fast failing consoles.
The reason xbox pads and playstation pads have stayed the same for so long is because they work well and people know them.
OK so Sony are releasing the PS3 with that weird boomerang thing but they have said that a bluetooth compatible version of the old pad design will be available as well.
Why? Because that pad is known and loved by millions and few people will want to change.
I can see that pad being another straw on the donkeys back.....