Second this question, if it can be "jailbroken" so you have a terminal with root privileges and a standard environment underneath it becomes an interesting option.
Current Chromebooks require a signed kernel on a separate partition. No grub, no BIOS. Not falling into that trap again, don't see why the new crop would be any better.
Ubuntu 12.10 may support Cortex A15, but I'm not sure. I know they were working on supporting it, so it's possible. There's also an open source Lima driver (for the Mali GPU's) but I don't know if they've even started reverse engineering the Mali T604 GPU in this thing, which is on a totally new GPU architecture, and has support for OpenGL ES 3.0 as well.
From one of the developers on the project: "(And getting a regular u-boot on these to use as generic linux hacking platforms isn't all that hard. Should be a nice base for people to do native ARM development)"
