Didn't IGN say in their 2008 review that Konami had two unnanounced Wii games in the works?...
At least two ;)
But yeah, I forgot about that. I'm sure Kojima's working on a Wii game now since IGN said that, and plus he said he wanted to make a Wii game after all.
I'm guessing Snatcher or ZoE3 (since it's not a big series and is cel shaded).