right at the bottom, small print 6.
Not happy about that, it's not like the iPad 3 doesn't have the power.
YouTube is not included in iOS 6 anymore because of a legal dispute between Google and Apple it's not Apple's choice, so now Google is going to make the YouTube app which you can download from the App Store. Maps depends on where you are, you don't get turn by turn navigation in every country and you don't even get the custom Apple cartography in places like China, probably due to legal registration problem etc. Panorama I was expecting for it on my iPad 3 too but it's not there I guess they just didn't think the iPad is that great of a camera.
No, one of them just didn't renew the contract.
We don't know that.
Very possibly, but also possibly because they just don't have that data yet.