They mentionend the gyro/3D mouse feature in multiple interviews.
http://www.youtube.com/watch?v=i2pCtcYGOhM#t=06m27s
Miyamoto is sad when people "lose track of the pointer"
They changed another thing over the years. Wii Sports Resort (unlike Wii Sports) lets you use the d-pad on top of the pointer to navigate through menus, and it makes sense. You're constantly holding the remote in different ways. Having to point at the screen every time you quickly want to restart or quit a round would get annoying fast. Skyward Sword lets you re-center the aiming cursor manually without having to point at the screen. It's supposed to be more comfortable and prevents people from losing track of the pointer/sensor bar.
... I suspect people like Gigglepoo think this is "losing calibration" because, on occasion, you may end up aiming at a spot that clearly isn't the center of the TV- down and to the right or whatever- as though it's straight at the screen. This happens precisely because you were pointing that way when you started the aiming action. There's also the possibility that, if you whip the Remote around particularly violently, you may max out one or more the sensors and end up pointing incorrectly; these are the reasons the "Press down to Center" button exists.
Why do they redefine the aiming "Center" every time you start an aiming action, rather than just depending on the initial location of the television? I suspect it actually helps people playing. You don't have to point at the TV at all... you can point slightly down and left at all times if you wish. In fact, that will probably happen naturally and unconsciously as you let your hands rest as you play... People have always griped about having to hold your hands correctly to play Wii games, straining wrists and all that... Well, with the Zelda implementation you don't have to rigidly point right at the screen at all times (particularly helpful since you're switching to aiming items so frequently in this one). The game adjusts to however your holding the Remote at a given time, and gives the "Center" option just in case you happened to be pointing uncomfortably off in space when you started one particular action. ...
Exactly. It's pretty obvious. Amazing that you actually have to explain that.
I was skeptical of gyro pointer controls (at least give me the option to use IR for aiming), but it works well in this game. Zelda isn't a shooter where you're constantly pointing at the screen. Aiming, looking and walking around in first person could have been improved with cursor sensitivity settings - faster camera, smaller bounding box i.e. less hand movement, but it's not a big deal.
I really hope developers continue to support IR aiming in future Wii U shooters. Some combination of both, or the option to use one or the other would be nice. IR pointing is still superior - faster, more precise and no temperature drift (no calibration).
The famous Wii Play shooting range video would be impossible with a gyroscope.
Wii Play Shooting Range 902
it's random
Wii Play Shooting Range 904
This is what happens when there's another light source in the room:
Something I noticed that isn't obvious:
This (or part of it) is the software they wrote to counter gyroscope temperature drift in Wii Sports Resort (Iwata asks). Swinging vertically down will re-center your sword without the need of a sensor bar. You can try it yourself. Get your sword off-center by standing in an angle to your sensor bar. Cover the front of your remote with a finger or hide/disconnect the sensor bar and get back to your seat. It'll re-center itself after a few of those swings.
quick demonstration