I don't think Nintendo will launch Cafe in early 2012. Nintendo always launches in fall/winter and it would deviate from their formula to do differently. Also Nintendo is going to want guaranteed high sales day one to get investors happy, a release in Spring would probably end up like the 3DS launch.
I'm guessing Zumba is coming to Kinect and that is the unnanounced platform. I would be hugely suprised to see Nintendo release Cafe early 2012. Though I can't complain personally I would love to get my hands on Cafe tomorow. Getting it sooner is good for the consumer but bad for Nintendo!
-JC7
"In God We Trust - In Games We Play " - Joel Reimer







