There are quite a few new features included in 4.3: personal hotspot is indeed included on the iPhone, although it needs to be enabled on the carrier side to work, and the iPad's side switch can now be set backto being an orientation lock, which should make a lot of people very happy.
To capture the highest quality audio, Tiki uses front-and-back facing microphone capsules that actively locate your orientationto the mic for use with multiple speakers or as you move around the room.
The U.S. marketing team would send to Japanese management product requirements based on real customer desires, but what came back in the next product cycle often failed to reflect this market orientation.