In the tweet from Nintendo, it does specifically mention new games. Whether, as you've surmised, that means 'unannounced' games, is up for debate (until tomorrow).
This'll either blow my theory out of the water or reinforce it.
Wii U-centric Nintendo Direct tomorrow at 2pm.
New games to be revealed, apparently.
I'm going to say they'll just focus on Pikmin 3, Wonderful 101 and Monster Hunter 3, maybe that Warioware sequel.
Would love to be wrong.
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