A couple of us got a chance to reboot it and get into the bios, it's a standard intel Atom board, so you can boot off external USB and install Linux or whatnot on it. I like how he did not answer the question on if the board could support more than 1gb of ram :). Out of the box it's running Windows XP, with Asus's cute little frontend on top of the desktop.
Yeah, we got into the bios and messed with it a bit. The display however is rotated once windows boots, which means that other OSs might have a bit of a problem getting the display properly set. It's a normal screen set in portrait mode.
The board should support 2gb ram, it's the exact same hardware that's in their eeePC netbooks.
I was just surprised by how slow their small overlay was, Maybe it was just when I was playing with it, but there was a 2 second lag time on everything