That's awesome news! But I really hope they will have a lot more motion plus games outside of Zelda. Nintendo hasn't released one motion plus game since Resort and there isn't really anything outside of Zelda that we know about, which is absolutely ridiculous.
As for wii sales the first half of the year looks pretty bad. There really aren't any system movers coming (I know Galaxy 2 is coming, but it will likely sell mostly to people who bought Galaxy 1). However the trio of wii fit plus, wii sports resort and NSMBwii should carry the wii sales for a good while, so wii sales should stay pretty good for the first half of the year. But they really need more games utilizing motion controls, because the main reason people buy the wii is because of the motion controls. Something they should really consider is making more core games based around motion plus. A pilotwings using controls like in the airsports in Resort would be definitly sell hardware.