Nintendo released a firmware update for the Wii allowing users to use any USB keyboard to enter text in the Wii's Opera-powered internet browser
While Nintendo added partial USB keyboard support in the last Wii firmware update a couple of months ago, the feature went largely unnoticed because it was missing from where it would be most useful: the internet browser.
The Wii does not force firmware updates, so to actually receive these enhancements users must download the upgrade by going to Wii system settings and choosing the option "update console".