theory time
placement in timeline is far future, or after skyward sword, or far past.
this is because the bow looked high tech, so it could be either
1. zelda is going high tech
2. takes place after skyward sword with the tech from that desert place
3. people who originally had the tech for the desert place
engine features will probably be somewhat like the GTA games, to allow the movement of anywhere in the world.
because you could go anywhere in the world... more "vehicles"? blimps? horse and carriage? special magic power that lets you fly?