no i don't know, but i think nintendo is making another wifi adapter just for the Wii. I'm sure that they thought about how it would work with Wii Connect 24 because most people don't like having their computers on all night
They probably thought of that when they made the current adapter (like they did with the DS WFC, nobody really knew about it untill after the system was already released). Some features from WC24 will probably be available for download when you start up (like updates), others will have to be lost (like the Animal Crossing scenario), because they would be impossible to do without a live update from the system