A Samurai Warriors 3 fact sheets reveals the details.
Koei has dropped hints of the Classic Controller Pro coming to North America and Europe via a fact sheet for the North American/European release of Wii title Samurai Warriors 3. The fact sheet describes the game as being fully compatible with the Classic Controller Pro, despite the fact that the peripheral has yet to be announced for either region.
Samurai Warriors 3 is set for a 2010 release on Wii.