OMG! So many posts... I can't possibly read them all before posting, so I apologize if I'm rambling here.
Could this mean Apple will also release a Mighty Keyboard? With an upper/lower row(s) of keys to control OS X (one for mail, one for safari, a calculator, startup disk panel, etc.). A key for Dashboard is a given. Of course, we already have several ways of doing all this and it is pretty convenient the way it is right now. But one additional way is always good. Dare I say: the return of the power key that allows force-restarts, force-shutdowns and simple restarts/shutdowns/boot?
Maybe also a money key to fill up your bank account whenever you run out of funds...
Seriously, a card-reader would be nice, providing web sites would upgrade their merchant software to be compatible with card-swiping quickly enough.
I hope Apple will soon add the option Mighty Mouse in their BTO interface. I don't really care for wireless (bluetooth) until batteries are no longer necessary (for those who are reading this and think I'm stupid or something for saying such an illogical thing, check out Wacom's wireless mouse: it's batteryless; of course, you need a wired tablet under the mouse, but the concept is good). I like my things wired, especially networking/internet access.
I think it's time Apple does something bigger: we need a new HID (Human Interface Device). The keyboard is nice, the mouse as well, but it's been ages since anything trully original (useful might be the best word here) was introduced by anyone.
I would hate to see HP, Dell or Gateway release the "next big thing" instead of Apple and reap all the profits. I'm not Apple, so I can't possibly know what it would be, but I can imagine: a very thin, low-resolution 4x6 touch screen, for instance; it could add multiple clipboards so that your Copy function is not limited to one thing... The possibilities are endless. How about a slider (like on sound consoles/mixers) for Photoshop color editing or Garageband track volume control.
I could go on and on with this, so I'll shut up and see what people think...