Wii Sports U hasn't been announced.
Woops meant Wii Fit U.
I just feel like it's very, very curious why the two 'Wii' branded games have disappeared without any notice or mention. Wii Fit U was a Q2 game, and they gave Pikmin 3 the courtesy to announce a 'slight delay'
It wouldn't be a bad move to rebrand the system during a relaunch. Call it the Nintendo U quietly, and by the time fall came around nobody would notice and the general public would just see a system branded 'Nintendo U' with new games.