It seems like people in NA and I think the UK are receiving this message when they try to access their Wii shop Channel.

The only info we have learned so far; is that it adds a little guide to the bottom right corner of the screen. A lot of people think, and it is a possibility’s,  that Nintendo is just setting up for the launch of Wiiware. Once we find out more details we will let you know.

(Thanks Nintendogal for the Pic)

Update: This is another screen shot taken from the Wii Shop Channel Update.

Link