Come on folks, a little common sense please. Yes there will be users, potentially a lot of 'em, that need a larger array of ports or faster processors. If that's the case and you want to go Apple then you buy a MacBook Pro. And no, the MBP line isn't going anywhere, kindly calm down a bit if you wouldn't mind...
For the majority of users however the only port they really use on a regular basis is the power socket. It's remarkable how much user habits have changed in the last couple of years actually. USB sticks have been replaced with cloud services, mobile phones sync wirelessly (or via their own cloud service), heck even bluetooth headphones have come on to the point they can be happily used for music for most people. Even by the standards of IT that change has been astonishingly fast.
Same for performance really. These CPU's are going to work well for 'burst' tasks, less so for stuff that taxes them for long periods. But for most people that fits their use pattern perfectly. If it doesn't you're going to be much better off with a MBP.
Frankly I don't get the whinging (other than this being a new Apple product and it's therefore compulsory to complain on these here forums). Compared to the 11" air you lose a Thunderbolt port and the USB's but keep broadly similar CPU performance and gain a Retina screen as well as a 0.16kg weight reduction. There's going to be a *lot* of people looking to buy this machine and it'll deliver something that meets their needs. For the rest of us the current MBP line is still superb and once Intel get their act together the 15" will likely get a pretty rapid update as well.