Nintendo sent out the following

 

On January 30, 2019, we plan to close the Wii Shop Channel, which has been available on Wii systems since December 2006. We sincerely thank our loyal customers for their support.

You can still add Wii Points until March 26, 2018, and purchase content on the Wii Shop Channel until January 30, 2019. In the future, we will be closing all services related to the Wii Shop Channel, including redownloading purchased WiiWare, Virtual Console titles, and Wii Channel, as well as Wii System Transfer Tool, which transfers data from Wii to the Wii U system.

If you have Wii Points to spend, content you want to re-download, or content you’d like to transfer from a Wii system to a Wii U system, we recommend you do so while the services are still available.

If you have any questions, please see our Q&A.

Thank you for supporting the Wii Shop Channel and for being such great fans of Nintendo.

Sincerely,

Your Friends at Nintendo

This is very sad news. The Wii Shop Channel was home to many great games. Hopefully they can be saved somehow because they deserve to be played.

What was your favourite WiiWare game?

Source: Nintendo PR