I got a Wii message from Nintendo about this last night, but apparently they've had it on their website since April, so it might be old news to people:
http://www.nintendo.com/whatsnew/detail/tiQImp7Oi97LiEyVqwDqL-eDnX6u9qjk
Wii Network Service Partial Discontinuation
2013-04-12
We at Nintendo sincerely thank you for your continued patronage of our company’s products. We would like to inform you that a portion of the network services offered through the Wii console will be discontinued starting June 27, 2013.
We apologize to those of you currently using these services, and ask for your understanding. The affected applications are as follows:
• Forecast Channel
• News Channel
• Everybody Votes Channel
• Nintendo Channel
• Check Mii Out Channel
• Data exchange between Wii friends on WiiConnect24*
*Wii message exchanges via Wii Message Board, Mii exchanges via Mii Channel, and exchanges of messages or data in some game titles will no longer be possible.
Following the discontinuation, the above services will not be available even if they are started up on the Wii menu. However, services other than those mentioned above, such as the automatic receipt of “Today’s Accomplishments” on the Wii Message Board and the Wii Shop Channel** can continue to be used.
**After the service end date, you will not be able to use the Wii Number from the address book.
For additional details, please visit support.nintendo.com
http://www.nintendo.com/whatsnew/detail/tiQImp7Oi97LiEyVqwDqL-eDnX6u9qjk
Wii Network Service Partial Discontinuation
2013-04-12
We at Nintendo sincerely thank you for your continued patronage of our company’s products. We would like to inform you that a portion of the network services offered through the Wii console will be discontinued starting June 27, 2013.
We apologize to those of you currently using these services, and ask for your understanding. The affected applications are as follows:
• Forecast Channel
• News Channel
• Everybody Votes Channel
• Nintendo Channel
• Check Mii Out Channel
• Data exchange between Wii friends on WiiConnect24*
*Wii message exchanges via Wii Message Board, Mii exchanges via Mii Channel, and exchanges of messages or data in some game titles will no longer be possible.
Following the discontinuation, the above services will not be available even if they are started up on the Wii menu. However, services other than those mentioned above, such as the automatic receipt of “Today’s Accomplishments” on the Wii Message Board and the Wii Shop Channel** can continue to be used.
**After the service end date, you will not be able to use the Wii Number from the address book.
For additional details, please visit support.nintendo.com