Board Thread:News and Announcements/@comment-24264457-20190118145037

After just over 12 years in business, the Wii Shop will finally shut down on January 30, 2019. This means you will no longer be able to purchase DLCs or redownload purchased DLCs. If you want to keep your DLCs be sure they are downloaded onto your console or, if you're out of space, an SD card. (This also applies to downloadable software in general-- make sure they're downloaded onto your console or an SD card). If you still have Wii Points, be sure to spend them in a way that you have no left-over Points, as those will just be forfeited. A reminder that JD sells DLCs for 200 (for recycled and alt DLCs on JD4-2015), 250 (JD3), and 300 Points. Even if you don't have any Points left, if you still haven't downloaded Firework, Roar, and Break Free this will be your last chance.

Nintendo will also discontinue the Wii's video-on-demand apps (YouTube, Netflix, etc.) on this date. They have not mentioned the Wii's Internet Browser, but that doesn't really work with modern websites anyway.

If you still would like to transfer data from your Wii to Wii U you will also have to do it by this date. While Nintendo has not stated specifically when this will shut down, I believe this feature heavily relies on the Wii Shop so it would be best to transfer now. Note that the licenses (proof of purchase) for JD2015 DLCs may not transfer over (or at least they didn't for me) so if you have any JD2015 DLCs besides Break Free transfer at your own risk.

Note that Wii on Wii U (aka vWii) still only has 512 MB of memory and cannot access the rest of the Wii U's memory, so an SD card will still be needed for Wii overflow

More info:
 * https://en-americas-support.nintendo.com/app/answers/detail/a_id/27560/p/604
 * https://www.nintendo.com/whatsnew/detail/reminder-wii-shop-closes-january-30-2019 