Its been a little late arriving but the Apple iPad keyboard arrived today. Most of whats been posted about it is correct, there are better keyboards, but this one is slim and works with the new connector. iOS did introduce some additional features for keyboard support and sometimes a keyboard is very useful, a number of this weeks posts were written in the pub on the new iPad Pro with keyboard.
The biggest issue I have is navigation when your outside of the applications, while you can app switch with the traditional Cmd-Tab combination and go to your iOS home screen with Cmd-H it needs more commands to navigate and sometimes your are forced to use the touch screen.
It many ways its the reverse of the issue that the Microsoft Surface has, which for some things forces you back to a keyboard. Both devices have their pluses and both their negatives.