Well, here's some wonderfully encouraging news about Call of Duty: Ghosts on Wii U. Here's what Activision had to say when approached about the lack of a Wii U announcement in their Call of Duty: Ghosts press release.
We don’t have any news for the Wii U at this time, as we aren’t dating next generation platforms yet. Stay tuned.
Sounds like some news will be coming in the future. That's about as good a response as one can hope for!