The new Power Mac G5 will support up to eightdisplays.
Aperture really seems to push the use multiple monitors.
AppleCare will only cover a single display when purchased at the same time as a CPU.
Apple currently provides no way to extend the warranty to/on a second display, much less 7 of them.
There is no RADAR/Bug Reporting for sales or support, so I can only hope this is seen via RAB Friday at del.icio.us.