My control scheme:
The touchscreen can also be used for things other than item storage. Swiping left or right on the screen brings you to other menus, such as equipment or maps. With a Circle Pad Pro, one can use a free camera similar to that of the GameCube Zelda games. The HUD resides entirely on the bottom screen.
There will also be an option to change the button layout. This alternate layout will change the sword button to B and the context-sensitive button to A.
By the way, context-sensitive means that the button action will change according to the situation.