Hi James
What I am sure is needed is a basic board, that is headless, i.e. no video, ala the Sheevaplug.
min 512 mb of memory and flash, and a 1 G processor.
This would be great for servers, PBXs, Nas in fact lots of lights out, (unattended) applications.
The Arm market recently appears to be rushing down the PDA / tablet rabbit hole, where every board on sale has bigger and faster graphics chips HDMI etc.
What we need is a basic board Cheap and fast!
If anyone knows of such a beast let me know
The Rasberry pi project shows that boards can be cheap ($25),
http://www.raspberrypi.org cheers
P