Activision responds to someone regarding Black Ops III on Wii U

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So someone on twitter asked Activision "Why we can connect our Nintendo IDs to the Call of Duty site if you are not developing nothing for it?"

Activision responded with "Hey there. Stay tuned for more Wii U releases. ^DL"

 

So what do you think this means guys?

Black Ops III on the Wii U? Port of CoD: AW? Entirely different game?

 

http://www.ign.com/articles/2015/04/30/activision-support-says-stay-tuned-on-call-of-duty-for-wii-u