Earlier today Nintendo has released a video with Eiji Aonuma stating that the game will not be released by the end of this year.
In the video Eiji Aonuma states that the team has discovered new possibilities in their new Zelda title and instead of prioritizing its release for 2015, They will be prioritizing in making the title a more complete and ultimate Zelda game. They have also stated that they wont be showing the game on E3 via tweet from their official account. The game has no official title and release date as of yet.