Even if it's a clone it does the same thing and you can pick them up for cheap. It doesn't look like there's going to be a wiikey update this century, perhaps in another 100 years or so they'll think about releasing it.
alternatively you could for an open source solution like OpenWii, or a commercial alternative go for a cyclowiz version 3 (if they do that) otherwise you'll have to do the messy job of installing an additional switch for the cyclowiz. OpenSource preflashed is probably your best , with future updates doable via DVD