Why they have to launch zelda U and NX on the same day?

[KLXVER]

Miyamotoo said:

KLXVER said:

More like they didnt want to show off the game until they knew the direction they wanted to go with it.

I dont think so, in their comments they looked very sure about direction they going with NX, even Iwata talked about new platform in January 2013. They constantly saying that NX is new concept and not just upgrade for previous consoles like Wii U and 3DS are.

Im talking about Yoshis Woolly World...