I know they're saying they're gonna bring this service to the west, but I highly doubt it.
From what I could see this(Wii no Ma) is extremely Japan focused. Even as far as programming goes, from the sample I saw it would be impossible to bring that stuff over(the original content does not seem to be Nintendo branded, so far it appears to be documentaries and cultural stuff). They'd basically have to create content specifically for Europe/US, and customize the "room" concept in big ways.
That's gonna take a lot of resources, and unless it becomes huge in Japan, I don't see it coming out of there. It reminds me a lot of the Famicom services that didn't get localized, and I think the fate of this one will be exactly the same.







