Wild theory: iMacs are done, to be replaced by upgraded minis sold in tandem with new ACDs.
There is no way that Apple would drop their flagship consumer product. When people think Apple they think iMac.
The minis with a glass touchscreen top are just silly. Are you going to sit with it in your lap to use it?
I really want a mini so I can hook it up to my cable DVR and use the FireWire output to capture the video. If they drop FireWire I will have to look for another solution.