When Call of Duty: Black Ops 2 launches on Nintendo's upcoming Wii U console, Call of Duty Elite won't be along for the ride.
Activision revealed to Kotaku this morning that they have no immediate plans for Call of Duty Elite to support the Nintendo Wii U. Whether this is due to online issues with Nintendo's upcoming console, or whether Activision simply isn't able to dedicate the man-hours to a console on which Call of Duty will be played by fewer consumers, we don't know. In the email to Kotaku, Activion said that, "we are currently evaluating options for Call of Duty Elite to support Nintendo's Wii U game system, however Call of Duty Elite for Call of Duty: Black Ops II will not support this platform when the game launches on November 13th."
As is always the case with these things, Activision is certainly not ruling out the potential for Black Ops 2 to support Call of Duty Elite on the Nintendo Wii U in the future, it just isn't going to do so at launch. When Modern Warfare 3 launched last year, Activision revealed that Call of Duty Elite was not going to be available on PC. As of early 2012, Activision was maintaining the assertion that they were working on bringing Elite functionality for PC online but no further details were released at that time.
Unfortunately, with Call of Duty: Black Ops 2, PC is once again being left in the dust. Activision has revealed that they are working diligently to get Elite working on PC but it isn't in the cards for launch.
For what it's worth, PC and Nintendo Wii make up roughly 4% of the market share for Call of Duty games.