Originally posted by -hh
I personally think a pivot screen is far more likely than a detachable one, for a couple of reasons:
a) The automatic screen flip software already exists on non-Apple LCD's, so all that's really needed is some reengineering of the arm's stop to allow it to rotate 90 degrees of pivoting, verify that the hidden wiring harness can tolerate the twist, an orientation sensor (tiny), and a software extension. IMO, this is all a "piece of cake" to pull off.
b) Detatchable means yet another unique/proprietary I/O plug for Apple to support, and the higher production costs that come along with it. But what's really going to hold it back is that the cost of the LCD screen is no longer as nicely hidden within the base unit's cost: it will be difficult for them to NOT have a base + 17" that exceeds the current cost for the same non-detachable system.
FWIW, if you wanted a "neato-gizmo" that can distract customers from MHz issues and that's not really a major form factor change, add a couple of small servo motors to the arm assembly, and control them with a software update.
The idea is to make the screen able to automatically adjust to the user's preferred location/orientation, just like how new luxury cars adjust your seat position, steering wheel, and rearview mirrors for different drivers based on settings kept in memory that are identified with the chip in the car key.
So your iMac's screen "pulls back" when you log out/shutdown, and as different users log in, the screen moves to the height & orientation that each user has identified as their personal preference.
-hh