[Update: the short answer is "Yes, they are!" However, it's the same web magazine they've had in Japan forever. Only the trademark registration is new.]
When it became clear that Nintendo's version of Nintendo Power was on the way out, there was a lot of speculation that the magazine would move online, bolstered Reggie Fils-Aime's idea of making Nintendo Power's archives becoming available on the Wii. Of course, instead of the print magazine being replaced by an online resource, it was replaced by ... an almost identical magazine.
Nintendo of Japan seems to have been inspired by the idea, however -- or by I Can Haz Cheezburger. They've registered a trademark for something called "Nintendo Online Magazine" or "N.O.M." Could this be a Wii-based magazine? The Nintendo Channel has already shown that Nintendo is willing to create exclusive video content for the Wii, along with demos. Words would be a natural next step.