JoWooD Germany has issued a press release that confirms the recent rumours about Sam & Max appearing on the Wii.
Due to the press release being in German, we can't get much information about the Wii version but hopefully they'll issue an English version soon. We've contacted JoWooD to find out so we should have more for you later.
It could be that Sam & Max will be released on the Wii store as episodic content similar to the PC version. Whatever the case, we'll know soon.