Yes, that's right, there's an update to the Wii (remember that thing?) that Nintendo just released today.
So go fire up that bad boy and get updating, or else something bad will happen.
In all seriousness, it's looking like it has something to do with the Wii U and making the Wii ready to get it's heart and soul ripped out of it and transplanted into the new console.
Why I can't just tape the Wii onto my Wii U and call it a day is beyond me...