Maybe this is old news, but i just discover this in amazon japan.

Here is the link. It will launch on november 13th.

http://www.amazon.co.jp/Wii-U-%E3%83%9E%E3%83%AA%E3%82%AA%E3%82%AB%E3%83%BC%E3%83%888-%E3%82%BB%E3%83%83%E3%83%88-%E3%82%AF%E3%83%AD/dp/B00OJYFSGO/ref=zg_bs_videogames_31

Nevermind Japan is way to busy with smash bros 3DS to even notice this bundle with a game of 5 months old, Nintendo should have brought this out in May/June and promote it like hell worldwide. If the bbundle included smash bros u and was released two weeks later and a bundle with these games and super mario 3d world it would be way more interesting. 

In the West they indeed launched this bundle, but not in Japan. Nintendo mismanagement at is finest, also in my country the bundle was pretty hard to find, but it was available and even though MK8 appaerently was advertised the bundle most likely wasn´t.

Proof that the bundle did not launch in Japan.

http://www.hardcoregamer.com/2014/10/15/mario-kart-8-wii-u-bundles-coming-to-japan-next-month/112129/