IGN received their Wii U unit today and was told that features like Miiverse, Nintendo TVii, Wii U Chat, and the eShop would be added just in time for the Wii U launch.  So as soon as you get your Wii U back home from the store, you should be able to download the update.

It does make sense that Nintendo would use every available hour to make sure the software is ready to go, but it would’ve been nice if the software was included out of the box and didn’t require a download.  I guess this will entice folks to connect their systems online.