I believe, at least from the videos that are going around, we won't have the luxury (or burden, your choice) of X11 in this instance.
The little of the system that is shown in craigix's video shows FB being loaded from a shell.
I've only compiled X11 on wintel machines, and IIRC it's typically 40-100Mb memory usage for a basic X w/ no WM, if its built from glibc at least. Certainly this will be built against busybox so hopefully it will be 10-20Mb of X, and between 2Mb (for something very lightweight like fluxbox or awm) to 100Mb+ for gnome, and you see we have a problem.
"init" is the baby that is traditionally in charge of spawning all your processes, like shells, managing "system" keystrokes (such as powerbutton, 3 finger salute, alt-f? vt switching etc.
The configuration is dependant on your particular implementation of init. I only have experience with sysvinit, which has a nice format detailed for example
here....
I suspect someone is going to write a pretty menu thingy, that sits on a low-ish level api and gets spawned on a VT, much like the getty's are being spawned in the LFS example.
But back to my original reasoning, it is very unlikely (due to memory constraints) there will be X unless you explicitly put it there, so don't feel limited to gnome/kde/windoze conventions. I would encourage all to think the very strong possibility that there will be init of some description, and it may or may not be configureable easily (ubuntu for example, does not use sysvinit, it has it's own init written by canonical, of which I know SFA).
More than likely the clever boffins will make some pretty menu that is bound to a vt (with a menu button to switch to it) that lists active tasks (excluding boring things like the kernel helper tasks etc) and allows killing them there/listing things it has found pxml's for etc. Trying to put a pretty system based menu that overlays on existing apps will hurt, having them on their own screen is more reliable.
+1 for a key on top of the keyboard and one on the bottom. I was going to go for one on either side, but I thought that in the heat of gaming fingers could slip and hit the combo.
It's confirmed officially that Pandora will use Kdrive, so yes, there will be X11