They have remade the Legend of Zelda: The Wind Waker for the Wii U in HD graphics.
You can have three save files in The Wind Waker
In the accepted Zelda timeline, Phantom Hourglass is after Wind Waker. When talking about release dates, Four Swords Adventures is after Wind Waker.
It is somewhere in the where in the Wind Temple
In The Legend of Zelda wind waker you can gather a total of 20 hearts via heart containers and heart pieces
There are no cheat codes.