iMac2
I figure there will be an iMac II or something like that, with a smaller chassis that fits an LCD. I wonder about things like where the motherboard will be. If they put it right behind the display, there could be problems related to orientation of hard drives, etc. That was the nice thing about the CRT... it's footprint fit nicely over a motherboard, making for a nice, elegant design.
Ideally, a monitor can be angled to an appropriate viewing angle. This is somewhat more important for LCDs than CRTs, although color shifting based on viewing angle is a lot better than it used to be. If the panel is user-adjustable, and the motherboard is right behind it in the same part of the enclosure, that probably means that drives are moving too. You don't want to be changing the orientation of a drive while it's spinning. This isn't a big problem for hard drives, which spin on a solid bearing, but for things like CDs, it's probably not smart.
Given that, I don't think I'd want the CPU to be right behind the LCD part. If we follow that guideline, we end up with something hinged, like a Powerbook.
Oh, wait. We already have one of those.
So then, I figure have a small base with the drives in it, but keep the motherboard behind the monitor. A bit of ingenuity would take care of the hinged connection to the drives with no trouble, I'm sure. They've got the basics down already in the connection to the LCD in a laptop.
If they made the panel part of the thing, say, 2.5-3" thick, they could even fit in a standard AGP slot, oriented so that the card is parallel to the motherboard. How cool would that be? They could have a G4-esque swinging door on the back of the display, that gave access to the RAM and that card, too. All they'd have to do is figure some way to connect to the video card internally, which wouldn't be incredibly hard either.
Ah, speculation. Isn't it fun?
-Jake