The only decent reference I've found so far is at 
http://www.mariowiki.com/Donkey_Kong_Wii, and I'm not even sure this game exists. I hope PAON or the SMG team is working on 
something in terms of a 3D DK game (that doesn't involve bongos! 

 ), but I highly doubt this particular title is real. 
The SMG team did a great job, and they made Jungle Beat too. I think they could make a great 3D DK platformer if they didn't use weird controls like the bongos or anything else which would ruin the game/concept. I honestly thought Jungle Beat had really good graphics 
and music, but they ruined it because of the lame control scheme and the "beats" concept.