The new mechanics give more power to the player.
http://www.nintendoworldreport.com/news/35591
The Legend of Zelda: A Link Between Worlds will “offer a brand new gameplay experience,” said Satoru Iwata, president of Nintendo, during this morning’s Nintendo Direct.
According to Iwata, A Link Between Worlds will still include various dungeons; however, the order that you approach those dungeons will now be up to the player after a certain point in the game.
Additionally, most of the game’s items will be immediately available in Ravio’s shop at the start of the game. This will require players to manage their rupees to rent, or buy items in order to tackle the dungeons.
The Legend of Zelda: A Link Between Worlds is slated to release on the Nintendo 3DS in North America on November 22.