It seems so IMWFO.

For one an image saying "Now Printing" was spotted on a Japanese website.

2.No delay has been announced and it's less than a month before Japanese release.

3.Most importantly THIS!

http://www.smashbros.com/jp/gamemode/wi-fi/images/wi-fi05/wi-fi05_071228h.jpg

And remember that either It's a demo Wii or the channels have been moved.

Any counterpoints?