Everyone knows Zelda. Love or hate some entries, everyone has enjoyed it at some point. The series, many agree, was in dire need of a new direction after the "formula" (quite successful, yet overused) grew stale.
While I won't say nothing in this game has been done before, and nothing looks or has better content, I think it's safe to say this will revolutionize gaming in many ways, just as Ocarina of Time did for 3D.
"Open World" games have been a growing trend in the industry, but Nintendo has stayed away from the "genre" up till this point, choosing to be more restrained and refined with world building.
"Open Air Action" is what they choose to call this new concept, a world bolstered by a solid game, rather than the opposite.
See for yourself, in what I find to be one of the finest trailers ever crafted... https://www.youtube.com/watch?v=1rPxiXXxftE
Keep in mind, this footage is all from the Wii U. Generally considered underpowered for the day, the game will also launch on the next Nintendo Console "NX" in March 2017, no doubt looking and running a bit better, but providing the same experience.
Oh, and *That MUSIC*