Definitely a great lineup the first half of the year for Nintendo's core fans. Not a whole lot of system sellers there, but very strong in terms of quality core games. Gonna be interesting to see how Nintendo can possibily top this in the 2nd half.
At this point it looks very likely that Zelda Wii could actually make it by the end of this year, it would be the perfect game to push for the holiday season, along with motion plus. I think that and their flagship Vitality Sensor game will be the two main titles they push this christmas.
Zelda games do have a history of delays, but remember, the only other Zelda Wii game, TP, is technically a Gamecube game, and if Nintendo decided to simply release it on the Gamecube, that would mean Nintendo has had over 3 years into the Wii's lifespan without a true successor Zelda game on the console. Plenty of time to work on the next game.