Even though NoA hasn't updated yet, we expect them to announce the Wii Shop Channel closure too. Basically this is how the timeframe will go...(will be updated as things warrant)
1) Until March 26/27th, 2018, you can continue to use the Wii Shop Channel as usual on Wii consoles or in Wii U's Wii Mode.
2) After March 26/27th, 2018, you will no longer be able to add Wii Points via the current methods as the Wii Shop Channel will start entering partially closed state.
3) On January 31st, 2019, the Wii Shop Channel will stop selling software (however redownloading* will continue though until a unspecified time in 2019 -- the time where the Wii Shop Channel will fully close will be announced at a later date).
If you don't have a Wii U and want to keep some of your Wii Virtual Console purchases, you should get a Wii U and initiate a Wii to Wii U system transfer ASAP! This will carry over most** VC purchases***. You'd only have to rebuy them for as little as a buck to two bucks each. Please note that the Wii U VC does not have crossbuy so any VC games from Wii that got rereleased on 3DS too, you will not be able get them for free or for a discount on 3DS! You'll have to pay full price on 3DS!
* NOTE 1 - Games/Apps with expired licenses may have the option of redownloading pulled.
** NOTE 2 - If certain Wii VC games have not been rereleased on Wii U, you will lose them entirely when the Wii Shop Channel fully closes.
*** NOTE 3 - Wii Channels and WiiWare will be lost on the Wii Shop Channel's full closure. Check to see if the relevant apps/games have been rereleased on other platforms, but you may have to repurchase them though! For example, you can get the Ace Attorney Trilogy on 3DS if you happen to lose the trilogy on WiiWare. Also if you have Skyward Sword, you may want to snag the save file fix channel from the Wii Channels area of the Wii Shop Channel!
EDIT - NOA has announced the closure too. Their page on this.
Edited by Ngamer01, 29 September 2017 - 06:47 AM.