If your Wii is connected to the internet, currently only available via WiFi, then you received a small update. What exactly the update did is still somewhat of a mystery, since as of this posting there is no mention on the official site. In addition, the download started late last night, so go figure.
Talk of the blogosphere is that the parental control update was focused on the Wii-Shop. A number of users reported not being able to access the Wii Shop until they downloaded and installed the update.
Sorry, still no Opera Wii Browser or Wii Weather. 
Here’s a parental update… Get me this stuff:
http://digg.com/gaming_news/Top_10_Gift_Ideas_for_Nintendo_Wii_Owners
Cool, although key words “Wii Owners”. A lot of people are still having trouble finding one.