The only thing I can think of that happened that I didn't expect was the dual core processor. I knew it would get a bump but this surprised me a bit. Other than that, it seems like most of the rumors were true...
The continued absence of I/O services, like USB, Thunderbolt, SD card seem consistent with the strategy that iOS devices are ancillary, not a competitor, to a personal computer.
I think it's going to be weird doing Facetime with device that might be in your lap or on a knee, looking upwards. I suppose some users will get a bicep workout holding it up at arm's length.
The rear camera is logical for apps like Red Laser or Google