From NeoGaf, Nintendo apparently has shown some different Zelda concepts they actually worked on, some of this pretty crazy:
http://www.neogaf.com/forum/showthread.php?t=1348920
Zelda With An Alien Invasion:

Something dubbed "Hyrule Wars":

Guitar Rock Link (holy shit at the meltdown if they had gone ahead with this):


Also: 2D Prototype map they would use in developing/testing Breath of the Wild's world:

Uh Metroid Zelda?:

I dunno what this is but it looks very bad ass:

Crazy! The alien invasion idea is really, really cool, I think they should make that one stat. The last one has an awesome art style too, Link has only one arm and it looks like he's seen some shit in his life.








