The Wii U version of Super Smash Bros. will include a variety of “Bigger Stages,” according to the most recent Super Smash Bros. Direct. These unique stages, which would have been too small for the 3DS version of the game, include the likes of Palutena’s Temple, Temple (The Legend of Zelda), and Big Battlefield. These larger stages will also include “special combat conditions” — Danger Zones on The Great Cave Offensive instantly K.O. an opponent who has over 100% damage — and are designed to make 8-player smash rounds more enjoyable, due to how hectic the screen could become on a smaller stage.
Source: Super Smash Bros. Direct